use python to split a video file into a set of parts
I use the following python code to split a FLV video file into a set of parts
,when finished ,only the first part video can be played ,the other parts are
corrupted.I wonder why and Is there some correct ways to split video files
import sys, os
kilobytes = 1024
megabytes = kilobytes * 1000
chunksize = int(1.4 * megabytes) # default: roughly a floppy
print(chunksize , type(chunksize ))
def split(fromfile, todir, chunksize=chunksize):
if not os.path.exists(todir): # caller handles errors
os.mkdir(todir)# make dir, read/write parts
else:
for fname in os.listdir(todir):# delete any existing files
os.remove(os.path.join(todir, fname))
partnum = 0
input = open(fromfile, 'rb') # use binary mode on Windows
while True:# eof=empty string from read
chunk = input.read(chunksize) # get next part <= chunksize
if not chunk: break
partnum += 1
filename = os.path.join(todir, ('part{}.flv'.format(partnum)))
fileobj = open(filename, 'wb')
fileobj.write(chunk)
fileobj.close()# or simply open().write()
input.close()
assert partnum <= # join sort fails if 5 digits
return partnum
if __name__ == '__main__':
fromfile = input('File to be split： ') # input if clicked
todir= input('Directory to store part files：')
print('Splitting', fromfile, 'to', todir, 'by', chunksize)
parts = split(fromfile, todir, chunksize)
print('Split finished:', parts, 'parts are in', todir)
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Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道：
> how to detect the character encoding in a web page ?
>
> such as this page
>
>
>
> http://python.org/
I found PyQt’s QtextStream can very accurately detect the character encoding
in a web page .
even for this bad page
chardet and beautiful soup failed ,but QtextStream can get the right result .
here is my code
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtNetwork import *
import sys
def slotSourceDownloaded(reply):
redirctLocation=reply.header(QNetworkRequest.LocationHeader)
redirctLocationUrl=reply.url() if not redirctLocation else redirctLocation
print(redirctLocationUrl)
if (reply.error()!= QNetworkReply.NoError):
print('', reply.errorString())
return
content=QTextStream(reply).readAll()
if content=='':
print('-', 'cannot find any resource !')
return
print(content)
reply.deleteLater()
qApp.quit()
if __name__ == '__main__':
app =QCoreApplication(sys.argv)
manager=QNetworkAccessManager ()
url =input('input url :')
request=QNetworkRequest
(QUrl.fromEncoded(QUrl.fromUserInput(url).toEncoded()))
request.setRawHeader("User-Agent" ,'Mozilla/5.0 (Windows NT 5.1)
AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.57 Safari/537.17 SE 2.X
MetaSr 1.0')
manager.get(request)
manager.finished.connect(slotSourceDownloaded)
sys.exit(app.exec_())
--
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Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道：
> how to detect the character encoding in a web page ?
>
> such as this page
>
>
>
> http://python.org/
I found PyQt’s QtextStream can very accurately detect the character encoding
in a web page .
even for this bad page
http://www.qnwz.cn/html/yinlegushihui/magazine/2013/0524/425731.html
chardet and beautiful soup failed ,but QtextStream can get the right result .
here is my code
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtNetwork import *
import sys
def slotSourceDownloaded(reply):
redirctLocation=reply.header(QNetworkRequest.LocationHeader)
redirctLocationUrl=reply.url() if not redirctLocation else redirctLocation
print(redirctLocationUrl)
if (reply.error()!= QNetworkReply.NoError):
print('', reply.errorString())
return
content=QTextStream(reply).readAll()
if content=='':
print('-', 'cannot find any resource !')
return
print(content)
reply.deleteLater()
qApp.quit()
if __name__ == '__main__':
app =QCoreApplication(sys.argv)
manager=QNetworkAccessManager ()
url =input('input url :')
request=QNetworkRequest
(QUrl.fromEncoded(QUrl.fromUserInput(url).toEncoded()))
request.setRawHeader("User-Agent" ,'Mozilla/5.0 (Windows NT 5.1)
AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.57 Safari/537.17 SE 2.X
MetaSr 1.0')
manager.get(request)
manager.finished.connect(slotSourceDownloaded)
sys.exit(app.exec_())
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Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道： > how to detect the character encoding in a web page ? > > such as this page > > > > http://python.org/ by the way ,we cannot get character encoding programmatically from the mate data without knowing the character encoding ahead ! -- http://mail.python.org/mailman/listinfo/python-list
Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道：
> how to detect the character encoding in a web page ?
>
> such as this page
>
>
>
> http://python.org/
Finally ,I found by using PyQt’s QtextStream , QTextCodec and chardet ,we can
get a web page code more securely
even for this bad page
http://www.qnwz.cn/html/yinlegushihui/magazine/2013/0524/425731.html
this script
http://www.flvxz.com/getFlv.php?url=aHR0cDojI3d3dy41Ni5jb20vdTk1L3ZfT1RFM05UYzBNakEuaHRtbA==
and this page without chardet in its source code
http://msdn.microsoft.com/en-us/library/bb802962(v=office.12).aspx
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtNetwork import *
import sys
import chardet
def slotSourceDownloaded(reply):
redirctLocation=reply.header(QNetworkRequest.LocationHeader)
redirctLocationUrl=reply.url() if not redirctLocation else redirctLocation
#print(redirctLocationUrl,reply.header(QNetworkRequest.ContentTypeHeader))
if (reply.error()!= QNetworkReply.NoError):
print('', reply.errorString())
return
pageCode=reply.readAll()
charCodecInfo=chardet.detect(pageCode.data())
textStream=QTextStream(pageCode)
codec=QTextCodec.codecForHtml(pageCode,QTextCodec.codecForName(charCodecInfo['encoding']
))
textStream.setCodec(codec)
content=textStream.readAll()
print(content)
if content=='':
print('-', 'cannot find any resource !')
return
reply.deleteLater()
qApp.quit()
if __name__ == '__main__':
app =QCoreApplication(sys.argv)
manager=QNetworkAccessManager ()
url =input('input url :')
request=QNetworkRequest
(QUrl.fromEncoded(QUrl.fromUserInput(url).toEncoded()))
request.setRawHeader("User-Agent" ,'Mozilla/5.0 (Windows NT 5.1)
AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.57 Safari/537.17 SE 2.X
MetaSr 1.0')
manager.get(request)
manager.finished.connect(slotSourceDownloaded)
sys.exit(app.exec_())
--
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Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道： > how to detect the character encoding in a web page ? > > such as this page > > > > http://python.org/ here is one thread that can help me understanding my code http://stackoverflow.com/questions/17001407/how-to-detect-the-character-encoding-of-a-web-page-programmatically/17009285#17009285 -- http://mail.python.org/mailman/listinfo/python-list
What’s the differences between these two pieces of code ?
What’s the differences between these two pieces of code ? (1) for i in range(1, 7): print(2 * i, end=' ') (2) for i in range(1, 7): print(2 * i, end=' ') print() when executed both respectively in Python shell ,I get the same effect . Who can tell me why ? -- http://mail.python.org/mailman/listinfo/python-list
Does os.getcwd() and os.curdir have the same effect ?
Does os.getcwd() and os.curdir have the same effect ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there any difference between print 3 and print '3' in Python ?
在 2012年3月26日星期一UTC+8下午7时45分26秒，iMath写道： > I know the print statement produces the same result when both of these two > instructions are executed ,I just want to know Is there any difference > between print 3 and print '3' in Python ? thx everyone -- http://mail.python.org/mailman/listinfo/python-list
Re: What’s the differences between these two pieces of code ?
在 2012年7月7日星期六UTC+8下午12时56分35秒，iMath写道： > What’s the differences between these two pieces of code ? > > (1) > > for i in range(1, 7): > > print(2 * i, end=' ') > > > > thx everyone > > (2) > > for i in range(1, 7): > > print(2 * i, end=' ') > > print() > > > > > > when executed both respectively in Python shell ,I get the same effect . > Who can tell me why ? -- http://mail.python.org/mailman/listinfo/python-list
regular expression : the dollar sign ($) work with re.match() or re.search() ？
I only know the dollar sign ($) will match a pattern from the end of a string,but which method does it work with ,re.match() or re.search() ？ -- http://mail.python.org/mailman/listinfo/python-list
Re: Does os.getcwd() and os.curdir have the same effect ?
On Sunday, September 9, 2012 9:39:28 PM UTC+8, Thomas Jollans wrote: > On 09/09/2012 03:22 PM, iMath wrote: > Does os.getcwd() and os.curdir have > the same effect ? > Python 3.2.3 (default, May 3 2012, 15:51:42) [GCC 4.6.3] > on linux2 Type "help", "copyright", "credits" or "license" for more > information. >>> import os >>> os.getcwd() '/home/tjol' >>> os.curdir '.' >>> > No. Both refer to the current directory, but os.curdir is not an absolute > path, so you can't chdir() to it later and expect to land it the original > directory. get it ,thanks -- http://mail.python.org/mailman/listinfo/python-list
write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212.
write a regex matches 800-555-1212, 555-1212, and also (800) 555-1212. -- http://mail.python.org/mailman/listinfo/python-list
where to view range([start], stop[, step])'s C implementation source code ？
where to view range([start], stop[, step])'s C implementation source code ？ -- http://mail.python.org/mailman/listinfo/python-list
To get the accurate value of 1 - 0.999999999999999 ,how to implement the python algorithm ？
To get the accurate value of 1 - 0.999 ,how to implement the python algorithm ？ BTW ，Windows’s calculator get the accurate value ，anyone who knows how to implement it ? -- http://mail.python.org/mailman/listinfo/python-list
how to use pyODBC to connect to MySql ,please give me a sample
host name : localhost user name:root password:19910512 database name : shopping -- http://mail.python.org/mailman/listinfo/python-list
Re: where to view range([start], stop[, step])'s C implementation source code ？
On Monday, October 1, 2012 11:42:26 PM UTC+8, Ian wrote: > On Mon, Oct 1, 2012 at 9:28 AM, iMath wrote: > > > where to view range([start], stop[, step])'s C implementation source code ？ > > > > http://hg.python.org/cpython/file/3f739f42be51/Objects/rangeobject.c thanks -- http://mail.python.org/mailman/listinfo/python-list
How to only get a list of the names of the non-directory files in current directory ('.')?
How to only get a list of the names of the non-directory files in current
directory ('.')?
(Note excluding its subdirectories ).
I need the code : )
--
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Re: How to only get a list of the names of the non-directory files in current directory ('.')?
在 2012年11月6日星期二UTC+8下午1时24分41秒，Chris Angelico写道：
> On Tue, Nov 6, 2012 at 4:19 PM, iMath wrote:
>
> > How to only get a list of the names of the non-directory files in current
> > directory ('.')?
>
> > (Note excluding its subdirectories ).
>
> >
>
> > I need the code : )
>
>
>
> Start by getting a list of names of everything in the current directory.
>
>
>
> Then filter that list by testing each one to see if it's a directory.
>
>
>
> Tip: The second step can be done with os.path.isdir
>
>
>
> Put some code together and try it. If you have trouble, post your
>
> code, any exception traceback you get, and what you're having
>
> difficulty with, and we'll go on from there.
>
>
>
> Have fun!
>
>
>
> ChrisA
how to get a list of names of everything in the current directory ?
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UnicodeDecodeError: 'utf-8' codec can't decode byte 0x89 in position 0: invalid start byte
the following code originally from
http://zetcode.com/databases/mysqlpythontutorial/
within the "Writing images" part .
import MySQLdb as mdb
import sys
try:
fin = open("Chrome_Logo.svg.png",'rb')
img = fin.read()
fin.close()
except IOError as e:
print ("Error %d: %s" % (e.args[0],e.args[1]))
sys.exit(1)
try:
conn = mdb.connect(host='localhost',user='testuser',
passwd='test623', db='testdb')
cursor = conn.cursor()
cursor.execute("INSERT INTO Images SET Data='%s'" % \
mdb.escape_string(img))
conn.commit()
cursor.close()
conn.close()
except mdb.Error as e:
print ("Error %d: %s" % (e.args[0],e.args[1]))
sys.exit(1)
I port it to python 3 ,and also change
fin = open("chrome.png")
to
fin = open("Chrome_Logo.png",'rb')
but when I run it ,it gives the following error :
Traceback (most recent call last):
File "E:\Python\py32\itest4.py", line 20, in
mdb.escape_string(img))
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x89 in position 0: invalid
start byte
so how to fix it ?
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Re: UnicodeDecodeError: 'utf-8' codec can't decode byte 0x89 in position 0: invalid start byte
在 2012年12月6日星期四UTC+8下午7时07分35秒，Hans Mulder写道：
> On 6/12/12 11:07:51, iMath wrote:
>
> > the following code originally from
> > http://zetcode.com/databases/mysqlpythontutorial/
>
> > within the "Writing images" part .
>
> >
>
> >
>
> > import MySQLdb as mdb
>
> > import sys
>
> >
>
> > try:
>
> > fin = open("Chrome_Logo.svg.png",'rb')
>
> > img = fin.read()
>
> > fin.close()
>
> >
>
> > except IOError as e:
>
> >
>
> > print ("Error %d: %s" % (e.args[0],e.args[1]))
>
> > sys.exit(1)
>
> >
>
> >
>
> > try:
>
> > conn = mdb.connect(host='localhost',user='testuser',
>
> >passwd='test623', db='testdb')
>
> > cursor = conn.cursor()
>
> > cursor.execute("INSERT INTO Images SET Data='%s'" % \
>
> > mdb.escape_string(img))
>
>
>
> You shouldn't call mdb.escape_string directly. Instead, you
>
> should put placeholders in your SQL statement and let MySQLdb
>
> figure out how to properly escape whatever needs escaping.
>
>
>
> Somewhat confusingly, placeholders are written as %s in MySQLdb.
>
> They differ from strings in not being enclosed in quotes.
>
> The other difference is that you'd provide two arguments to
>
> cursor.execute; the second of these is a tuple; in this case
>
> a tuple with only one element:
>
>
>
> cursor.execute("INSERT INTO Images SET Data=%s", (img,))
>
>
thanks，but it still doesn't work
>
> > conn.commit()
>
> >
>
> > cursor.close()
>
> > conn.close()
>
> >
>
> > except mdb.Error as e:
>
> >
>
> > print ("Error %d: %s" % (e.args[0],e.args[1]))
>
> > sys.exit(1)
>
> >
>
> >
>
> > I port it to python 3 ,and also change
>
> > fin = open("chrome.png")
>
> > to
>
> > fin = open("Chrome_Logo.png",'rb')
>
> > but when I run it ,it gives the following error :
>
> >
>
> > Traceback (most recent call last):
>
> > File "E:\Python\py32\itest4.py", line 20, in
>
> > mdb.escape_string(img))
>
> > UnicodeDecodeError: 'utf-8' codec can't decode byte 0x89 in position 0:
> > invalid start byte
>
> >
>
> > so how to fix it ?
>
>
>
> Python 3 distinguishes between binary data and Unicode text.
>
> Trying to apply string functions to images or other binary
>
> data won't work.
>
>
>
> Maybe correcting this bytes/strings confusion and porting
>
> to Python 3 in one go is too large a transformation. In
>
> that case, your best bet would be to go back to Python 2
>
> and fix all the bytes/string confusion there. When you've
>
> got it working again, you may be ready to port to Python 3.
>
>
>
>
>
> Hope this helps,
>
>
>
> -- HansM
--
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where to view open() function's C implementation source code ï¼
where to view open() function's C implementation source code ï¼ -- http://mail.python.org/mailman/listinfo/python-list
Re: where to view open() function's C implementation source code �
å¨ 2012å¹´12æ18æ¥ææäºUTC+8ä¸å1æ¶35å58ç§ï¼Roy Smithåéï¼ > In article , > > iMath wrote: > > > > > where to view open() function's C implementation source code ï¼ > > > > http://www.python.org/download/releases/ > > > > Download the source for the version you're interested in. but which python module is open() in ? -- http://mail.python.org/mailman/listinfo/python-list
Re: where to view open() function's C implementation source code �
å¨ 2012å¹´12æ19æ¥ææä¸UTC+8ä¸å4æ¶57å37ç§ï¼[email protected]åéï¼ > On Monday, December 17, 2012 10:35:58 PM UTC-7, Roy Smith wrote: > > > iMath wrote: > > > > where to view open() function's C implementation source code ï¼ > > > http://www.python.org/download/releases/ > > > Download the source for the version you're interested in. > > > > iMath: > > > > There is no need to download the source. You can browse the > > source code online. For the v3.0.0 version of open(): > > hg.python.org/cpython/file/bd8afb90ebf2/Modules/_io/_iomodule.c > > > > For 2.7.3 I think what you want is the builtin_open() function in > > http://hg.python.org/cpython/file/70274d53c1dd/Python/bltinmodule.c > > and the file object and open_the_file() function in > > http://hg.python.org/cpython/file/70274d53c1dd/Objects/fileobject.c > > > > Hope this helps. thanks very much ! -- http://mail.python.org/mailman/listinfo/python-list
Re: where to view open() function's C implementation source code �
å¨ 2012å¹´12æ19æ¥ææä¸UTC+8ä¸å4æ¶57å37ç§ï¼[email protected]åéï¼ > On Monday, December 17, 2012 10:35:58 PM UTC-7, Roy Smith wrote: > > > iMath wrote: > > > > where to view open() function's C implementation source code ï¼ > > > http://www.python.org/download/releases/ > > > Download the source for the version you're interested in. > > > > iMath: > > > > There is no need to download the source. You can browse the > > source code online. For the v3.0.0 version of open(): > > hg.python.org/cpython/file/bd8afb90ebf2/Modules/_io/_iomodule.c > > > > For 2.7.3 I think what you want is the builtin_open() function in > > http://hg.python.org/cpython/file/70274d53c1dd/Python/bltinmodule.c > > and the file object and open_the_file() function in > > http://hg.python.org/cpython/file/70274d53c1dd/Objects/fileobject.c > > > > Hope this helps. thanks very much ! -- http://mail.python.org/mailman/listinfo/python-list
how to detect the encoding used for a specific text data ?
how to detect the encoding used for a specific text data ? -- http://mail.python.org/mailman/listinfo/python-list
Re: how to detect the encoding used for a specific text data ?
which package to use ? -- http://mail.python.org/mailman/listinfo/python-list
redirect standard output problem
redirect standard output problem
why the result only print A but leave out 888 ?
import sys
class RedirectStdoutTo:
def __init__(self, out_new):
self.out_new = out_new
def __enter__(self):
sys.stdout = self.out_new
def __exit__(self, *args):
sys.stdout = sys.__stdout__
print('A')
with open('out.log', mode='w', encoding='utf-8') as a_file,
RedirectStdoutTo(a_file):
print('B')
print('C')
print(888)
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Pass and return
Pass and return Are these two functions the same ? def test(): return def test(): pass -- http://mail.python.org/mailman/listinfo/python-list
Re: redirect standard output problem
在 2012年12月21日星期五UTC+8下午3时24分10秒，Chris Angelico写道： > On Fri, Dec 21, 2012 at 4:23 PM, iMath wrote: > > > redirect standard output problem > > > > > > why the result only print A but leave out 888 ? > > > > No idea, because when I paste your code into the Python 3.3 > > interpreter or save it to a file and run it, it does exactly what I > > would expect. A and 888 get sent to the screen, B and C go to the > > file. > > > > What environment are you working in? Python version, operating system, > > any little details that just might help us help you. > > > > ChrisA on WinXP + python32 when I run it through command line ,it works ok ,but when I run it through IDLE , only print A but leave out 888 so why ? -- http://mail.python.org/mailman/listinfo/python-list
how to detect the character encoding in a web page ?
how to detect the character encoding in a web page ? such as this page http://python.org/ -- http://mail.python.org/mailman/listinfo/python-list
urllib.error.HTTPError: HTTP Error 403: Forbidden
>>> import urllib.request
>>> response =
>>> urllib.request.urlopen('http://en.wikipedia.org/wiki/Internet_media_type')
Traceback (most recent call last):
File "", line 1, in
response =
urllib.request.urlopen('http://en.wikipedia.org/wiki/Internet_media_type')
File "C:\Python32\lib\urllib\request.py", line 138, in urlopen
return opener.open(url, data, timeout)
File "C:\Python32\lib\urllib\request.py", line 375, in open
response = meth(req, response)
File "C:\Python32\lib\urllib\request.py", line 487, in http_response
'http', request, response, code, msg, hdrs)
File "C:\Python32\lib\urllib\request.py", line 413, in error
return self._call_chain(*args)
File "C:\Python32\lib\urllib\request.py", line 347, in _call_chain
result = func(*args)
File "C:\Python32\lib\urllib\request.py", line 495, in http_error_default
raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden
why this url generate error ？
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Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道： > how to detect the character encoding in a web page ? > > such as this page > > > > http://python.org/ but how to let python do it for you ? such as this page http://python.org/ how to detect the character encoding in this web page by python ? -- http://mail.python.org/mailman/listinfo/python-list
Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道： > how to detect the character encoding in a web page ? > > such as this page > > > > http://python.org/ but how to let python do it for you ? such as these 2 pages http://python.org/ http://msdn.microsoft.com/en-us/library/bb802962(v=office.12).aspx how to detect the character encoding in these 2 pages by python ? -- http://mail.python.org/mailman/listinfo/python-list
Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道： > how to detect the character encoding in a web page ? > > such as this page > > > > http://python.org/ but how to let python do it for you ? such as these 2 pages http://python.org/ http://msdn.microsoft.com/en-us/library/bb802962(v=office.12).aspx how to detect the character encoding in these 2 pages by python ? -- http://mail.python.org/mailman/listinfo/python-list
EOFError why print(e) cannot print out any information ？
why print(e) cannot print out any information ？
class user:
def __init__(self, x,y,z):
self.id = x
self.name = y
self.emailadd=z
def dispuser(self):
print('User ID: ', self.id)
print('User Name : ', self.name)
print('Email Address: ', self.emailadd)
f = open('UsersInfo.bin', 'wb')
n=int(input('How many users?'))
print('Enter ', n, 'numbers')
for i in range(0,n):
u=input('User ID: ')
n=input('User Name: ')
e=input('Email Address: ')
usrobj=user(u,n,e)
pickle.dump(usrobj,f)
f.close()
print('\nInformation of the users is:')
f = open('UsersInfo.bin','rb')
while True:
try:
usrobj = pickle.load(f)
except EOFError as e:
print(e)
break
else:
usrobj.dispuser()
f.close()
--
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need a url that its http response header that cotain 401 status code
I am going to do a Basic Authentication , so I need a url that its http response header that cotain 401 status code. -- http://mail.python.org/mailman/listinfo/python-list
os.path.realpath(path) bug on win7 ?
os.path.realpath(path) bug on win7 ?Temp.link is a Symbolic linkIts target location is C:\test\test1But >>> os.path.realpath(r'C:\Users\SAMSUNG\Temp.link\test2')'C:\\Users\\SAMSUNG\\Temp.link\\test2'I thought the return value should be ' C:\\test\\test1\\test2'Is it a bug ? anyone can clear it to me ?-- http://mail.python.org/mailman/listinfo/python-list
Re: os.path.realpath(path) bug on win7 ?
在 2013年1月6日星期日UTC+8下午3时06分10秒，Chris Rebert写道： > On Sat, Jan 5, 2013 at 10:55 PM, iMath <[email protected]> wrote: > > > > > > os.path.realpath(path) bug on win7 ? > > > > > > Temp.link is a Symbolic link > > > Its target location is C:\test\test1 > > > But > > > >>> os.path.realpath(r'C:\Users\SAMSUNG\Temp.link\test2') > > > 'C:\\Users\\SAMSUNG\\Temp.link\\test2' > > > > > > I thought the return value should be ' C:\\test\\test1\\test2' > > > > > > Is it a bug ? anyone can clear it to me ? > > > > What does os.path.islink('C:/Users/SAMSUNG/Temp.link') report? True > > > > Cheers, > > Chris -- http://mail.python.org/mailman/listinfo/python-list
Re: os.path.realpath(path) bug on win7 ?
在 2013年1月7日星期一UTC+8上午7时40分06秒，Victor Stinner写道： > It looks like the following issue: > > http://bugs.python.org/issue14094 > > Victor > > Le 6 janv. 2013 07:59, "iMath" <[email protected]> a écrit : > > > > > os.path.realpath(path) bug on win7 ? > > Temp.link is a Symbolic link > Its target location is C:\test\test1 > But > >>> os.path.realpath(r'C:\Users\SAMSUNG\Temp.link\test2') > 'C:\\Users\\SAMSUNG\\Temp.link\\test2' > > > I thought the return value should be ' C:\\test\\test1\\test2' > > Is it a bug ? anyone can clear it to me ? > > > -- > > http://mail.python.org/mailman/listinfo/python-list perhaps it is -- http://mail.python.org/mailman/listinfo/python-list
Re: how to detect the character encoding in a web page ?
在 2012年12月24日星期一UTC+8上午8时34分47秒，iMath写道： > how to detect the character encoding in a web page ? > > such as this page > > > > http://python.org/ up to now , maybe chadet is the only way to let python automatically do it . -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expression : the dollar sign ($) work with re.match() or re.search() ？
在 2012年9月26日星期三UTC+8下午3时38分50秒，iMath写道：
> I only know the dollar sign ($) will match a pattern from the
>
> end of a string,but which method does it work with ,re.match() or re.search()
> ？
I thought re.match('h.$', 'hbxihi') will match ‘hi’ ,but it does not .so why ?
--
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what’s the difference between socket.send() and socket.sendall() ?
what’s the difference between socket.send() and socket.sendall() ? It is so hard for me to tell the difference between them from the python doc so what is the difference between them ? and each one is suitable for which case ?-- http://mail.python.org/mailman/listinfo/python-list
How to implement mouse gesture by python or pyqt ?
It would be better to give me some examples .thanks in advance ! P.S. which module or lib are needed ? -- http://mail.python.org/mailman/listinfo/python-list
how to download internet files by python ?
for example ,if I want to download this file ,how to implement the download functionality by python ? http://down.51voa.com/201208/se-ed-foreign-students-friends-16aug12.mp3 as for download speed ,of course ,the fast ,the better ,so how to implement it ? It would be better to show me an example :) thanks !!! -- http://mail.python.org/mailman/listinfo/python-list
How to get the selected text of the webpage in chrome through python ?
How to get the selected text of the webpage in chrome through python ? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the selected text of the webpage in chrome through python ?
在 2013年1月8日星期二UTC+8下午12时20分28秒，iMath写道： > How to get the selected text of the webpage in chrome through python ? I need the code ,cuz I am only familiar with Python ,so it would be better to give me the code written in Python . You can also give me the code in other programming language ,thanks in advance :) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the selected text of the webpage in chrome through python ?
在 2013年1月8日星期二UTC+8下午9时19分51秒，Bruno Dupuis写道： > On Mon, Jan 07, 2013 at 08:20:28PM -0800, iMath wrote: > > > How to get the selected text of the webpage in chrome through python ? > > > > What you need is a way to get selected text from wherever it comes. The > > way to do this depends on your graphical environment. If you use X, i'd make a > > a quick and dirty call to xclip -o, although there must be a pure python > > implementation which in turn depends on the python framework you play > > with (gtk/qt/wx/tk/...). > > > > Short answer is : it depends on your system, and it may be easier and more > > portable if you use a graphical toolkit. > > > > cheers. > > > > -- > > Bruno Dupuis I use it on WinXP , I also learned PyQt4 . can u help ? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the selected text of the webpage in chrome through python ?
在 2013年1月8日星期二UTC+8下午9时11分30秒，Dave Angel写道： > On 01/08/2013 07:38 AM, Dennis Lee Bieber wrote: > > > On Mon, 7 Jan 2013 20:20:28 -0800 (PST), iMath > > > declaimed the following in gmane.comp.python.general: > > > > > >> How to get the selected text of the webpage in chrome through python ? > > > Chrome is a browser, is it not... If you want to get the text in > > > Python, you have to write the equivalent of a browser -- something that > > > parses the returned HTML message, extracting the parts you want. > > > > To get a selection, you can either wait till it's copied to the > > clipboard, and get it from there, or you can write a addon for the > > application. Since Chrome accepts addons, I suggest you research that > > angle. Probably mozilla.org is the place to start, and function > > > > nsISelectionController::GetSelection() might be some place to examine. > > > > You might find some hints in > > http://stackoverflow.com/questions/2671474/range-selection-and-mozilla > > > > > > if you are going to work with the clipboard, realize that it works quite > > differently from one OS to another, and even from one desktop manager to > > another. > > > > -- > > > > DaveA It seems need Javascript to work it on . Unfortunately ，I am only familiar with python . -- http://mail.python.org/mailman/listinfo/python-list
Re: How to implement mouse gesture by python or pyqt ?
在 2013年1月8日星期二UTC+8上午8时44分20秒，iMath写道： > It would be better to give me some examples .thanks in advance ! > > > > P.S. which module or lib are needed ? what I wanna perhaps like this: when a right mouse button is pressed and we go down and right with a cursor. As in letter 'L'. Our mouse gesture will close the window. I googled such gesture examples on PyQt4 ,but hard to find one ,so your help will be greatly appreciated ! thanks inadvance ! -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the selected text of the webpage in chrome through python ?
在 2013年1月9日星期三UTC+8下午5时35分15秒，Alister写道： > On Mon, 07 Jan 2013 20:20:28 -0800, iMath wrote: > > > > > How to get the selected text of the webpage in chrome through python ? > > > > i think you need to explain your requirement further > > also what do you want to do to the text once you have it? > > > > > > > > > > -- > > Genius is one percent inspiration and ninety-nine percent perspiration. > > -- Thomas Alva Edison I want to google it with a mouse gesture -- http://mail.python.org/mailman/listinfo/python-list
Re: how to download internet files by python ?
在 2013年1月8日星期二UTC+8下午1时04分54秒，Roy Smith写道： > In article , > > Cameron Simpson wrote: > > > > > On 07Jan2013 20:19, iMath wrote: > > > | for example ,if I want to download this file ,how to implement the > > download > > > | functionality by python ? > > > | > > > | http://down.51voa.com/201208/se-ed-foreign-students-friends-16aug12.mp3 > > > | > > > | as for download speed ,of course ,the fast ,the better ,so how to > > > | implement it ? > > > | It would be better to show me an example :) thanks !!! > > > > > > Look at urllib2. > > > > Even better, look at requests > > (http://docs.python-requests.org/en/latest/). There's nothing you can > > do with requests that you can't do with urllib2, but the interface is a > > whole lot easier to work with. There is also a httplib2 module https://code.google.com/p/httplib2/ which one is more pythonic and powerful ? -- http://mail.python.org/mailman/listinfo/python-list
How to call wget by python ?
can you give me an example code ? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to implement mouse gesture by python or pyqt ?
在 2013年1月10日星期四UTC+8上午8时06分13秒，Michael Torrie写道： > On 01/08/2013 07:57 PM, iMath wrote: > > > 在 2013年1月8日星期二UTC+8上午8时44分20秒，iMath写道： > > >> It would be better to give me some examples .thanks in advance ! > > >> > > >> > > >> > > >> P.S. which module or lib are needed ? > > > > > > what I wanna perhaps like this: when a right mouse button is pressed > > > and we go down and right with a cursor. As in letter 'L'. Our mouse > > > gesture will close the window. I googled such gesture examples on > > > PyQt4 ,but hard to find one ,so your help will be greatly appreciated > > > ! thanks inadvance ! > > > > My guess is that if you google for it you'll find a gesture recognition > > module for python. moosegesture.py is one such implementation. However > > it is up to you to tie it into your chosen GUI toolkit. It merely > > processes tuples of points in the gesture. Each GUI toolkit has mailing > > lists and forums that would help you know that information, which is not > > really python-specific. oh yes ,I find it moosegesture.py -- http://mail.python.org/mailman/listinfo/python-list
To make a method or attribute private
To make a method or attribute private (inaccessible from the outside), simply start its name with two underscores 《Beginning Python From Novice to Professional》 but there is another saying goes: Beginning a variable name with a single underscore indicates that the variable should be treated as ‘private’. I test both these 2 rules ,it seems only names that start with two underscores are REAL private methods or attributes . >>> class A: ... def __init__(self): ... self.a = 'a' ... self._a = '_a' ... self.__a = '__a' ... >>> ap = A() >>> ap.a 'a' >>> ap._a '_a' >>> ap.__a Traceback (most recent call last): File "", line 1, in ? AttributeError: A instance has no attribute '__a' so what is your opinion about single leading underscore and private methods or attributes？ -- http://mail.python.org/mailman/listinfo/python-list
Re: To make a method or attribute private
在 2013年1月17日星期四UTC+8上午9时04分00秒，alex23写道： > On Jan 17, 10:34 am, "iMath" <[email protected]> wrote: > > > To make a method or attribute private (inaccessible from the outside), > > simply start its > > > name with two underscores > > > > > > but there is another saying goes: > > > Beginning a variable name with a single underscore indicates that the > > variable should be treated as ‘private’. > > > I test both these 2 rules ,it seems only names that start with two > > underscores are REAL private methods or attributes . > > > so what is your opinion about single leading underscore and private methods > > or attributes？ > > > > The key word in the second quote is "indicates". Placing a single > > underscore before an attribute name does nothing but _show_ other > > programmers that you consider this to be part of the implementation > > rather than the interface, and that you make no guarantees of its > > continued existence over time. > > > > More importantly, however: there is no real concept of "private" > > attributes in Python. Try this at the command prompt: > > > > >>> ap._A__a > > '__a' > > > > It's still readable, and it's still writable too. The double- > > underscore naming is referred to as "name mangling" and while it's > > often passed off as the way to make private methods in Python (the > > tutorial even states this), what it is really intended for is to > > ensure that multiple inheritance works correctly: > > > > >>> class A(object): > > ... foo = 'A' > > ... def get_A_foo(self): > > ... return self.foo > > ... > > >>> class B(object): > > ... foo = 'B' > > ... def get_B_foo(self): > > ... return self.foo > > ... > > >>> class C(A, B): > > ... def __init__(self): > > ... super(C, self).__init__() > > ... > > >>> c = C() > > >>> c.get_A_foo() > > 'A' > > >>> c.get_B_foo() > > 'A' > > > > Here, we haven't mangled the attribute 'foo' on either A or B, so on > > the instance of C, which inherits from both, the inherited methods are > > referring to the same attribute, which is A's in this case due to the > > method resolution order. By re-naming 'foo' on both A and B to > > '__foo', each can then refer to their _own_ attribute, and also allow > > for C to have its own 'foo' attribute which doesn't conflict with > > either of them: > > > > >>> class A(object): > > ... __foo = 'A' > > ... def get_A_foo(self): > > ... return self.__foo > > ... > > >>> class B(object): > > ... __foo = 'B' > > ... def get_B_foo(self): > > ... return self.__foo > > ... > > >>> class C(A, B): > > ... foo = 'C' > > ... def __init__(self): > > ... super(C, self).__init__() > > ... > > >>> c = C() > > >>> c.get_A_foo() > > 'A' > > >>> c.get_B_foo() > > 'B' > > >>> c.foo > > 'C' > > > > There is no way to make an externally private attribute. This is > > generally considered a good thing by most Python developers: if I > > _need_ to access your class's implementation, I can do so, but the > > name mangling forces me to be aware that this is something you don't > > recommend doing. You'll often hear the term "consenting adults" used > > to refer to this, meaning we can all decide for ourselves if we're > > willing to risk using an implementation detail. what's the meaning of 'object' in class A(object) and class B(object) ? -- http://mail.python.org/mailman/listinfo/python-list
Re: To make a method or attribute private
在 2013年1月17日星期四UTC+8上午8时34分22秒，iMath写道： > To make a method or attribute private (inaccessible from the outside), simply > start its > name with two underscores > > > 《Beginning Python From Novice to Professional》 > > > but there is another saying goes: > Beginning a variable name with a single underscore indicates that the > variable should be treated as ‘private’. > > > I test both these 2 rules ,it seems only names that start with two > underscores are REAL private methods or attributes . > > > >>> class A: > ... def __init__(self): > ... self.a = 'a' > ... self._a = '_a' > ... self.__a = '__a' > ... > > > > > > > >>> ap = A() > >>> ap.a > 'a' > >>> ap._a > '_a' > >>> ap.__a > Traceback (most recent call last): > File "", line 1, in ? > AttributeError: A instance has no attribute '__a' > > > so what is your opinion about single leading underscore and private methods > or attributes？ so there is no REAL private variable in Python but conversion exists in it that python programmer should follow and recognize .right ? -- http://mail.python.org/mailman/listinfo/python-list
anyone can make a Python bindings of VLC-Qt ?
anyone can make a Python bindings of VLC-Qt ? https://github.com/ntadej/vlc-qt accurately, can anyone make a PyQt bindings of VLC-Qt ? -- http://mail.python.org/mailman/listinfo/python-list
what is the difference between commenting and uncommenting the __init__ method in this class?
what is the difference between commenting and uncommenting the __init__ method in this class? class CounterList(list): counter = 0 ##def __init__(self, *args): ##super(CounterList, self).__init__(*args) def __getitem__(self, index): self.__class__.counter += 1 return super(CounterList, self).__getitem__(index) -- http://mail.python.org/mailman/listinfo/python-list
[os.path.join(r'E:\Python', name) for name in []] returns []
why [os.path.join(r'E:\Python', name) for name in []] returns [] ? please explain it in detail ！ -- http://mail.python.org/mailman/listinfo/python-list
Re: [os.path.join(r'E:\Python', name) for name in []] returns []
在 2013年1月29日星期二UTC+8下午9时33分26秒，Steven D'Aprano写道： > iMath wrote: > why [os.path.join(r'E:\Python', name) for name in []] returns > [] ? Because you are iterating over an empty list, []. That list > comprehension is the equivalent of: result = [] for name in []: > result.append( os.path.join(r'E:\Python', name) ) Since you iterate over an > empty list, the body of the loop never executes, and the result list remains > empty. What did you expect it to do? -- Steven just in order to get the full path name of each file . -- http://mail.python.org/mailman/listinfo/python-list
Re: matplotlib basemap colorbar exception : Given element not contained in the stack
please see the formated code at https://stackoverflow.com/questions/72423464/matplotlib-basemap-colorbar-exception-given-element-not-contained-in-the-stack -- https://mail.python.org/mailman/listinfo/python-list
Re: matplotlib basemap colorbar exception : Given element not contained in the stack
在 2022年5月30日星期一 UTC+8 03:29:28， 写道： > On 2022-05-29 13:57, iMath wrote: > > please see the formated code at > > https://stackoverflow.com/questions/72423464/matplotlib-basemap-colorbar-exception-given-element-not-contained-in-the-stack > The problem might be that you're passing "ax=self.ax" when you create > the basemap, and you have: > > self.ax = self.map_canvas.figure.subplots() > > According to the docs, ".subplots" doesn't return the axes, it returns a > _tuple_ of the figure and the axes. Thanks for your reply ! But as I printed the value of self.ax , it is actually an instance of AxesSubplot. -- https://mail.python.org/mailman/listinfo/python-list
recover pickled data: pickle data was truncated
Normally, the shelve data should be read and write by only one process at a time, but unfortunately it was simultaneously read and write by two processes, thus corrupted it. Is there any way to recover all data in it ? Currently I just get "pickle data was truncated" exception after reading a portion of the data? Data and code here :https://drive.google.com/file/d/137nJFc1TvOge88EjzhnFX9bXg6vd0RYQ/view?usp=sharing -- https://mail.python.org/mailman/listinfo/python-list
Re: recover pickled data: pickle data was truncated
> You have lost the data in that case. But I found the size of the file of the shelve data didn't change much, so I guess the data are still in it , I just wonder any way to recover my data. -- https://mail.python.org/mailman/listinfo/python-list
Re: recover pickled data: pickle data was truncated
在 2021年12月30日星期四 UTC+8 03:13:21， 写道： > On Wed, 29 Dec 2021 at 18:33, iMath wrote: > > But I found the size of the file of the shelve data didn't change much, so > > I guess the data are still in it , I just wonder any way to recover my data. > I agree with Barry, Chris and Avi. IMHO your data is lost. Unpickling > it by hand is a harsh work and maybe unreliable. > > Is there any reason you can't simply add a semaphore to avoid writing > at the same time and re-run the code and regenerate the data? Thanks for your replies! I didn't have a sense of adding a semaphore on writing to pickle data before, so corrupted the data. Since my data was colleted in the daily usage, so cannot re-run the code and regenerate the data. In order to avoid corrupting my data again and the complicity of using a semaphore, now I am using json text to store my data. -- https://mail.python.org/mailman/listinfo/python-list
Re: recover pickled data: pickle data was truncated
Thanks for all your kind help, wish you a promising year! -- https://mail.python.org/mailman/listinfo/python-list
use regex to search the page one time to get two types of Information
I need to use regex to search two types of Information within a web page, while it seems searching the page two times rather than one is much time consuming , is it possible to search the page one time to get two or more types of Information? -- https://mail.python.org/mailman/listinfo/python-list
Re: use regex to search the page one time to get two types of Information
each regex only has one matched result in the web page -- https://mail.python.org/mailman/listinfo/python-list
index for regex.search() beyond which the RE engine will not go.
for regex.search(string[, pos[, endpos]]) The optional parameter endpos is the index into the string beyond which the RE engine will not go, while this lead me to believe the RE engine will still search on till the endpos position even after it returned the matched object, is this Right ? -- https://mail.python.org/mailman/listinfo/python-list
Re: use regex to search the page one time to get two types of Information
1. searching the page two times rather than one is a little bit time consuming . 2. starting the second search from the first match.endpos does reduce the time consuming . 3. how to combine both patterns into one regex? while using the special | regex operator only matches one regex not both -- https://mail.python.org/mailman/listinfo/python-list
Re: use regex to search the page one time to get two types of Information
On Friday, August 19, 2016 at 9:19:22 PM UTC+8, Chris Angelico wrote: > On Fri, Aug 19, 2016 at 11:13 PM, iMath wrote: > > 1. searching the page two times rather than one is a little bit time > > consuming . > > Have you measured that? If not, ignore it. You're searching a web > page; if you're downloading that before you search it, chances are > very good that you spend far more time waiting for the download than > you ever will on the regex. > > ChrisA tested, searching the page two times rather than one is a little bit time consuming . -- https://mail.python.org/mailman/listinfo/python-list
Re: use regex to search the page one time to get two types of Information
On Friday, August 19, 2016 at 9:45:08 PM UTC+8, Friedrich Rentsch wrote:
> On 08/19/2016 09:02 AM, iMath wrote:
> > I need to use regex to search two types of Information within a web page,
> > while it seems searching the page two times rather than one is much time
> > consuming , is it possible to search the page one time to get two or more
> > types of Information?
>
> >>> r = re.compile ('page|Information|time')
> >>> r.findall ( (your post) )
> ['Information', 'page', 'page', 'time', 'time', 'page', 'time',
> 'Information']
>
> Does that look right?
>
> Frederic
I found starting the second search from the first match.endpos does reduce the
time consuming, with less time consuming than your solution ,thanks anyway !
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Re: index for regex.search() beyond which the RE engine will not go.
On Friday, August 19, 2016 at 10:09:19 PM UTC+8, Steve D'Aprano wrote:
> On Fri, 19 Aug 2016 09:14 pm, iMath wrote:
>
> >
> > for
> > regex.search(string[, pos[, endpos]])
> > The optional parameter endpos is the index into the string beyond which
> > the RE engine will not go, while this lead me to believe the RE engine
> > will still search on till the endpos position even after it returned the
> > matched object, is this Right ?
>
> No.
>
> Once the RE engine finds a match, it stops. You can test this for yourself
> with a small timing test, using the "timeit" module.
>
> from timeit import Timer
> huge_string = 'aaabc' + 'a'*100 + 'dea'
> re1 = r'ab.a'
> re2 = r'ad.a'
>
> # set up some code to time.
> setup = 'import re; from __main__ import huge_string, re1, re2'
> t1 = Timer('re.search(re1, huge_string)', setup)
> t2 = Timer('re.search(re2, huge_string)', setup)
>
> # Now run the timers.
> best = min(t1.repeat(number=1000))/1000
> print("Time to locate regex at the start of huge string:", best)
> best = min(t2.repeat(number=1000))/1000
> print("Time to locate regex at the end of the huge string:", best)
>
>
>
> When I run that on my computer, it prints:
>
> Time to locate regex at the start of huge string: 4.9710273742675785e-06
> Time to locate regex at the end of the huge string: 0.0038938069343566893
>
>
> So it takes about 4.9 microseconds to find the regex at the beginning of the
> string. To find the regex at the end of the string takes about 3893
> microseconds.
>
>
> The "endpos" parameter tells the RE engine to stop at that position if the
> regex isn't found before it. It won't go beyond that point.
>
>
>
>
>
>
> --
> Steve
> “Cheer up,” they said, “things could be worse.” So I cheered up, and sure
> enough, things got worse.
Thanks for clarifying
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easy way to return a list of absolute file or directory path within a directory
Any easier solutions on returning a list of absolute file or directory path within a directory? Mine is list(map(lambda entry: os.path.join(directory,entry),os.listdir(directory))) -- https://mail.python.org/mailman/listinfo/python-list
Re: easy way to return a list of absolute file or directory path within a directory
On Wednesday, September 7, 2016 at 4:00:31 PM UTC+8, Steven D'Aprano wrote: > On Wednesday 07 September 2016 17:08, iMath wrote: > > > Any easier solutions on returning a list of absolute file or directory path > > within a directory? Mine is > > > > list(map(lambda entry: os.path.join(directory,entry),os.listdir(directory))) > > > Use a list comprehension: > > > [os.path.join(directory,entry) for entry in os.listdir(directory)] > > > > -- > Steven > > git gets easier once you get the basic idea that branches are homeomorphic > endofunctors mapping submanifolds of a Hilbert space. yes, a list comprehension does make the code more readable -- https://mail.python.org/mailman/listinfo/python-list
filesystem encoding 'strict' on Windows
the doc of os.fsencode(filename) says Encode filename to the filesystem encoding 'strict' on Windows, what does 'strict' mean ? -- https://mail.python.org/mailman/listinfo/python-list
python3 - set '\n\n' as the terminator when writing a formatted LogRecord
Is it possible to set '\n\n' as the terminator when writing a formatted LogRecord to a stream by changing the format parameter of logging.basicConfig? I know it is possible using the terminator attribute of StreamHandler class to implement this, I just wonder Is it possible to achieve this feature by changing the format parameter? I am not familiar with the format string language -- https://mail.python.org/mailman/listinfo/python-list
Introducing my Python/PyQt5 powered Bing wallpaper open source project
Hello everyone , I'd like to introduce my Python/PyQt5 powered Bing wallpaper open source project. BingNiceWallpapers https://github.com/redstoneleo/BingNiceWallpapers BingNiceWallpapers can get background images from http://www.bing.com/?mkt=zh-CN and set them as your desktop wallpaper by just a single click on system tray icon. For Windows binary installer and more information, please refer to http://mathjoy.lofter.com/post/42208d_7cabcf7 (written in simplified Chinese) Features Changing wallpaper in a single click on system tray icon or after a specified time interval Windows and Linux Gnome desktop support Delete or save the current wallpaper Welcome to help with the project ! -- https://mail.python.org/mailman/listinfo/python-list
Introducing my Python/PyQt5 powered Bing wallpaper open source project
Hello everyone , I'd like to introduce my Python/PyQt5 powered Bing wallpaper open source project. â ï BingNiceWallpapers https://github.com/redstoneleo/BingNiceWallpapers BingNiceWallpapers can get background images from http://www.bing.com/?mkt=zh-CN and set them as your desktop wallpaper by just a single click on system tray icon. For Windows binary installer and more information, please refer to http://mathjoy.lofter.com/post/42208d_7cabcf7 (written in simplified Chinese) Features Changing wallpaper in a single click on system tray icon or after a specified time interval Windows and Linux Gnome desktop support Delete or save the current wallpaper Welcome to help with the project ! -- https://mail.python.org/mailman/listinfo/python-list
send PIL.Image to django server side and get it back
I also posted the question here
https://stackoverflow.com/questions/51355926/send-pil-image-to-django-server-side-and-get-it-back
I don't know what's under the hood of sending an image from client side to
server side, so stuck by the following scenario.
I want to send a PIL.Image object to django server side using the Python
requests lib and get it back in order to use the PIL.Image object on server
side. As I have tested , if sent the PIL.Image object without any conversion ,
that is
r = requests.post(SERVER_URL,
data={
'image': PILimage,#PILimage is of type PIL.Image
'wordPos':(86,23)
},
)
then I just got a str object with value on server side, I guess it was caused by
requests, which converted the PIL.Image object to a str object before sending,
so why requestsdo the conversion ? why cannot we send the PIL.Image object
without any conversion over the Internet ? please give some explanation here,
thanks!
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Re: send PIL.Image to django server side and get it back
Thanks, I solved it finally stackoverflow.com/a/51453785/1485853 -- https://mail.python.org/mailman/listinfo/python-list
right way to use zipimport, zipimport.ZipImportError: not a Zip file
The same question also posted here https://stackoverflow.com/questions/51820473/right-way-to-use-zipimport-zipimport-zipimporterror-not-a-zip-file I have managed to use [this module][1] without installation - just import it from path to use , import sys url = 'https://example.com' sys.path.insert(0, r'C:\Users\i\Downloads\you-get-0.4.1128\src') # from you_get import common common.any_download(url, info_only=True)#NoneType It seems possible in Python to use `zipimport` to directly use the zip archive of the module without extraction, I wonder what is the right way to use `zipimport`, a simple trying like the following just gives the exception . I downloaded the file from [here][2] , the file `C:\Users\i\Downloads\you-get-0.4.1128.zip` does exist and isn't corrupted. >>> import zipimport >>> zipimport.zipimporter(r'C:\Users\i\Downloads\you-get-0.4.1128.zip') Traceback (most recent call last): File "", line 1, in zipimport.zipimporter(r'C:\Users\i\Downloads\you-get-0.4.1128.zip') zipimport.ZipImportError: not a Zip file: 'C:\\Users\\i\\Downloads\\you-get-0.4.1128.zip' >>> [1]: https://github.com/soimort/you-get/releases [2]: https://github.com/soimort/you-get/archive/v0.4.1128.zip -- https://mail.python.org/mailman/listinfo/python-list
Re: right way to use zipimport, zipimport.ZipImportError: not a Zip file
I think someone gives the true reason caused the exception here
https://stackoverflow.com/a/51821910/1485853
Thanks to his explanation , I extracted the zip archive and then add the
extracted to a zip archive using Bandizip, this time
`zipimport.zipimporter(r'C:\Users\i\Downloads\you-get-0.4.1128.zip') ` doesn't
give the exception , but still cannot import the module, even adding the
`.zip` file to `sys.path`,
>>> import sys
>>> sys.path.insert(0,
r'C:\Users\i\Downloads\you-get-0.4.1128.zip\you-get-0.4.1128\src')
>>> from you_get import common
Traceback (most recent call last):
File "", line 1, in
from you_get import common
ModuleNotFoundError: No module named 'you_get'
>>>
>>> import zipimport
>>>
z=zipimport.zipimporter(r'C:\Users\i\Downloads\you-get-0.4.1128.zip\you-get-0.4.1128\src')
>>> z
>>> z.load_module('you_get.common')
Traceback (most recent call last):
File "", line 1, in
z.load_module('you_get.common')
zipimport.ZipImportError: can't find module 'you_get.common'
>>> z.load_module('you_get')
Traceback (most recent call last):
File "", line 1, in
z.load_module('you_get')
zipimport.ZipImportError: can't find module 'you_get'
What I actually want to do is to use the module in a pyinstaller frozen
application , I also need to upgrade the module to latest version whenever
needed , I cannot find a solution yet.
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Re: right way to use zipimport, zipimport.ZipImportError: not a Zip file
I think someone gives the true reason caused the exception here
https://stackoverflow.com/a/51821910/1485853
Thanks to his explanation , I extracted the zip archive and then add the
extracted to a zip archive using Bandizip, this time
`zipimport.zipimporter(r'C:\Users\i\Downloads\you-get-0.4.1128.zip') ` doesn't
give the exception , but still cannot import the module, even adding the
`.zip` file to `sys.path`,
>>> import sys
>>> sys.path.insert(0,
r'C:\Users\i\Downloads\you-get-0.4.1128.zip\you-get-0.4.1128\src')
>>> from you_get import common
Traceback (most recent call last):
File "", line 1, in
from you_get import common
ModuleNotFoundError: No module named 'you_get'
>>>
>>> import zipimport
>>>
z=zipimport.zipimporter(r'C:\Users\i\Downloads\you-get-0.4.1128.zip\you-get-0.4.1128\src')
>>> z
>>> z.load_module('you_get.common')
Traceback (most recent call last):
File "", line 1, in
z.load_module('you_get.common')
zipimport.ZipImportError: can't find module 'you_get.common'
>>> z.load_module('you_get')
Traceback (most recent call last):
File "", line 1, in
z.load_module('you_get')
zipimport.ZipImportError: can't find module 'you_get'
What I actually want to do is to use the module in a pyinstaller frozen
application , I also need to upgrade the module to latest version whenever
needed , I cannot find a solution yet.
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Re: right way to use zipimport, zipimport.ZipImportError: not a Zip file
Not works on Windows >>> import sys >>> sys.path.insert(0, >>> 'C:/Users/i/Downloads/you-get-0.4.1128.zip/you-get-0.4.1128/src') >>> from you_get import common Traceback (most recent call last): File "", line 1, in from you_get import common ModuleNotFoundError: No module named 'you_get' >>> -- https://mail.python.org/mailman/listinfo/python-list
Design an encrypted time-limited API on Client/Server side
I am planning design an encrypted time-limited API on both Client and Server
sides, the server side is written in Django, the client side is a GUI program
which call the API by
import requests
c = requests.post("http://127.0.0.1:8000/VideoParser/";, data={'videoUrl':
videoUrl })
The way it call the API is desperately exposed to those who can use network
traffic capturing tools like wireshark and fiddler, while I don't want anyone
else could call the API with their customized videoUrl, and if people made the
post call with the same parameters 2 minutes later after the client initially
made the call, the call should be valid or expired, so how to design the
encrypted time-limited API on both Client and Server side in this case ?
P.S. I think add an identifier to the post data could prevent them using the API
import requests
c = requests.post("http://127.0.0.1:8000/VideoParser/";, data={'videoUrl':
videoUrl, 'identifier':value_of_identifier })
provided there is something encrypted in the value_of_identifier and it changes
with each call, but I don't know how to get started, any idea ?
It would be better to show some code , I really don't know which modules to use
and how to start to write code.
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Re: Win32 API in pywin32
On Friday, August 5, 2016 at 7:50:28 AM UTC+8, [email protected] wrote: > According to Python.org Mark Hammond has an Add-on (pywin32) that supports > Win32 and COM. > > Does anyone know if the Add-on covers all Win32 API functions, and if not is > there a list of the subset of Win32 API functions it does include? > > J. According to my experience , pywin32 doesn't covers all Win32 API functions but most of them , so for these not supported functions, you could resort to ctypes ,and there seems no list of the subset of Win32 API functions it does include. You can contact with the developers of pywin32 using the mailing list [email protected] -- https://mail.python.org/mailman/listinfo/python-list
get a certain request url during Loading a web page
During Loading this web page(http://www.iqiyi.com/v_19rrkkri8k.html) , the browser makes many requests,now I need a certain request url (e.g.starts with 'http://cache.video.qiyi.com/vms?') during the Loading process ,and the request is made on condition that the adobe flash player plugin for NPAPI is enabled , so any way to get the url via python ? P.S. Better to show some code, I am new to this area. -- https://mail.python.org/mailman/listinfo/python-list
find all js/css/image pathnames in a HTML document
To find all js/css/image pathnames in a HTML document, I used regular expression(in the last line of my code snippet) to do this as the following, are there any other shorter regular expressions or more efficient ways to do this ? import re translation=''' bee·tle™ / ˈbiːtl ; NAmE ˈbiːtl / noun , verb beetle beetles beetled beetling noun 1 an insect, often large and black, with a hard case on its back, covering its wings. There are several types of beetle. 甲虫 ☞see also death-watch beetle 2 Beetle ( NAmE also bug ) the English names for the original Volkswagen small car with a round shape at the front and the back “甲壳虫”（英国人用以指称一款圆头圆顶的原大众牌的小汽车） verb [intransitive ] + adv./prep. ( BrE) ( informal) to move somewhere quickly 快速移动 SYN scurry ◆ I last saw him beetling off down the road. 我上次见到他时，他正快步沿路而去。 bee·tle™ / ˈbiːtl ; NAmE ˈbiːtl / ''' print(re.findall(r'(?:href|src)="([^"]+?\.(?:css|js|png|jpg))"', translation)) -- https://mail.python.org/mailman/listinfo/python-list
celery multi celery.exceptions.TimeoutError: The operation timed out
I followed the official [Celery
guide](https://docs.celeryproject.org/en/stable/getting-started/next-steps.html#in-the-background)
to learn, everything works well when using `celery -A proj worker -l info` to
start the worker, however , if I run the worker in the background using `celery
multi restart w1 -A proj -l info --logfile=./celery.log`, then I got
>>> from proj.tasks import add
>>> add.delay().get(timeout=19)
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.8/dist-packages/celery/result.py", line 230,
in get
return self.backend.wait_for_pending(
File "/usr/local/lib/python3.8/dist-packages/celery/backends/base.py",
line 660, in wait_for_pending
meta = self.wait_for(
File "/usr/local/lib/python3.8/dist-packages/celery/backends/base.py",
line 696, in wait_for
raise TimeoutError('The operation timed out.')
celery.exceptions.TimeoutError: The operation timed out.
>>>
So what's wrong ?
Test environment :
- Python 3.8.2
- celery multi v4.4.7
- rabbitmqctl version --->3.8.2
and Project layout ([code
files](https://github.com/celery/celery/files/5231502/proj.zip)):
> proj/__init__.py
> /celery.py
> /tasks.py
celery.py
from __future__ import absolute_import, unicode_literals
from celery import Celery
app = Celery('proj',
broker='amqp://localhost',
# backend='db+sqlite:///results.sqlite', # The backend
argument， If you don’t need results, it’s better to disable them. Results can
also be disabled for individual tasks by setting the @task(ignore_result=True)
option.
include=['proj.tasks']) # The include argument is a list of
modules to import when the worker starts. You need to add our tasks module here
so that the worker is able to find our tasks.
app.conf.CELERY_RESULT_BACKEND = 'db+sqlite:///results.sqlite'
if __name__ == '__main__':
app.start()
tasks.py
from __future__ import absolute_import, unicode_literals
from .celery import app
import datetime
@app.task
def add():
return datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
The log info as the following , I googled , but didn't find a working solutions
```
[2020-09-15 22:10:03,229: INFO/MainProcess] Connected to
amqp://guest:**@127.0.0.1:5672//
[2020-09-15 22:10:03,238: INFO/MainProcess] mingle: searching for neighbors
[2020-09-15 22:10:04,260: INFO/MainProcess] mingle: all alone
[2020-09-15 22:10:04,273: INFO/MainProcess] w1@iZwz962a07bhoio77q4ewxZ ready.
[2020-09-15 22:10:10,625: ERROR/MainProcess] Received unregistered task of type
'proj.tasks.add'.
The message has been ignored and discarded.
Did you remember to import the module containing this task?
Or maybe you're using relative imports?
Please see
http://docs.celeryq.org/en/latest/internals/protocol.html
for more information.
The full contents of the message body was:
'[[], {}, {"callbacks": null, "errbacks": null, "chain": null, "chord": null}]'
(77b)
Traceback (most recent call last):
File
"/usr/local/lib/python3.8/dist-packages/celery/worker/consumer/consumer.py",
line 562, in on_task_received
strategy = strategies[type_]
KeyError: 'proj.tasks.add'
```
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celery multi celery.exceptions.TimeoutError: The operation timed out
Asked 3 days ago at https://stackoverflow.com/questions/63951696/celery-multi-celery-exceptions-timeouterror-the-operation-timed-out But nobody helped yet, anyone ? -- https://mail.python.org/mailman/listinfo/python-list
Re: celery multi celery.exceptions.TimeoutError: The operation timed out
在 2020年9月21日星期一 UTC+8 下午8:02:44， 写道： > Op 21-09-2020 om 12:14 schreef iMath: > > Asked 3 days ago at > > https://stackoverflow.com/questions/63951696/celery-multi-celery-exceptions-timeouterror-the-operation-timed-out > > > > > > But nobody helped yet, anyone ? > > > Did you see > https://stackoverflow.com/questions/9769496/celery-received-unregistered-task-of-type-run-example > > ? > > The error says "Received unregistered task of type 'proj.tasks.add'", so > it looks very much like your registry is not correct/complete. > > Vriendelijke groeten/Kind regards, > > Menno Hölscher None of the answers helped . Finally ,I switched to https://github.com/jarekwg/django-apscheduler I found it is elegant and easy to use -- https://mail.python.org/mailman/listinfo/python-list
run command line on Windows without showing DOS console window
is there anyway to run command line on Windows without showing DOS console window ? can you use the following command line to give a little example ? wget -r -np -nd http://example.com/packages/ the path to wget is C:\Program Files\GnuWin32\bin\wget.exe -- https://mail.python.org/mailman/listinfo/python-list
Re: run command line on Windows without showing DOS console window
在 2013年11月20日星期三UTC+8下午10时49分50秒，Tim Golden写道： > On 20/11/2013 14:44, iMath wrote: > > > > > > > > > is there anyway to run command line on Windows without showing DOS console > > window ? > > > > > > can you use the following command line to give a little example ? > > > > > > wget -r -np -nd http://example.com/packages/ > > > > > > the path to wget is C:\Program Files\GnuWin32\bin\wget.exe > > > > > > > subprocess.call(["wget", "-r", "-np", "-nd", "http://example.com";]) > > > > TJG Have you tried it ? the DOS console window still pops up? but I found when shell=True ,the DOS console window doesn't pop up,anyone can explain why ? -- https://mail.python.org/mailman/listinfo/python-list
how to implement a queue-like container with sort function
I want to a fixed length list-like container, it should have a sorted()-like function that I can use to sort it,I think there should also a function I can use it to detect whether the numbers of items in it reaches the length of the container , because if the numbers of items in it reaches the length(fixed) of the container,I want to process the data in it .Is there a container in Python like this ?If not, what base container should be used to implement such container? the container is similar to queue ,but queue doesn't have a sort function -- https://mail.python.org/mailman/listinfo/python-list
Re: how to implement a queue-like container with sort function
All in all,I want to first fill the container, then sort it and process all the contents in it -- https://mail.python.org/mailman/listinfo/python-list
Re: how to implement a queue-like container with sort function
hey , you used >>> sorted(a.queue) this means the queue.Queue() has an attribute queue ,but I cannot find it described in the DOC ,where you find it ? -- https://mail.python.org/mailman/listinfo/python-list
Re: how to implement a queue-like container with sort function
it seems PriorityQueue satisfy my requirement here . BTW ,the Queue object has an attribute 'queue' ,but I cannot find it described in the DOC ,what it means ? -- https://mail.python.org/mailman/listinfo/python-list
using ffmpeg command line with python's subprocess module
I have few wav files that I can use either of the following command line mentioned here https://trac.ffmpeg.org/wiki/How%20to%20concatenate%20%28join,%20merge%29%20media%20files to concatenate ffmpeg -f concat -i <(for f in ./*.wav; do echo "file '$f'"; done) -c copy output.wav ffmpeg -f concat -i <(printf "file '%s'\n" ./*.wav) -c copy output.wav ffmpeg -f concat -i <(find . -name '*.wav' -printf "file '%p'\n") -c copy output.wav anyone know how to convert either of them to work with python's subprocess module, it would be better if your solution is platform independent . -- https://mail.python.org/mailman/listinfo/python-list
