Re: [Tutor] Dictionaries and multiple keys/values
On 03/26/2013 12:36 AM, Robert Sjoblom wrote:
Hi again, Tutor List.
I am trying to figure out a problem I've run into. Let me first say
that this is an assignment, so please don't give me any answers, but
just nudge me in the general direction. So the task is this: from a
text file, populate three different dictionaries with various
information. The text file is structured like so:
Georgie Porgie
87%
$$$
Canadian, Pub Food
So name, rating, price range, and food offered. After food offered
follows a blank line before the next restaurant is listed.
There are a number of things about the input file that you haven't
specified, and it's useful to create a running description of the
assumptions you're making about it. That way, if one of those
assumptions turns out to not always be true, you at least have a clue as
to what might be wrong.
And in real-life problems, you might want to add code to test every one
of those assumptions, and exit with a clean message when the data
doesn't meet them.
Examples of such assumptions:
1) the "name" line is unique; no two records have the same name
2) the rating is always exactly two digits followed by a percent sign,
even if it's less than 10%.
3) white space may occur before and after the dollarsigns on the
price-range field, but never on the rating or name lines
4) there will be exactly 5 lines for every record, including the last
one in the file.
The three dictionaries are:
name_to_rating = {}
price_to_names = {'$': [], '$$': [], '$$$': [], '': []}
cuisine_to_names = {}
Now I've poked at this for a while now, and one idea I had, which I
worked on for quite a while, was that since the restaurants all start
at index 0, 5, 10 and so on, I could structure a while loop like this:
with open('textfile.txt') as mdf:
file_length = len(mdf.readlines())-1
mdf.seek(0)
data = mdf.readlines()
i = 0
while file_length > 0:
name_to_rating[data[i]] = int(data[i+1][:2])
price_to_names[data[i+2].strip()].append(data[i].strip())
# here's the cuisine_to_names part
i += 5
file_length -= 5
And while this works, for the two first dictionaries, it seems really
cumbersome -- especially that second expression -- and very, very
brittle. However, even if I was happy with that, I can't figure out
what to do in the situation where:
data[i+3] = 'Canadian, Pub Food' #should be two items, is currently a string.
My problem is that I'm... stupid. I can split the entry into a list
with two items, but even so I don't know how to add the key: value
pair to the dictionary so that the value is a list, which I then later
can append things to.
Nothing stupid about that. Your only shortcoming is assuming it should
be a single line doing the assignment. Once you use
cuisines.split(something) to make a list of cuisines, you then need to
loop over them. And if the cuisine doesn't already exist, you need to
create the item, while if it does, you need to append to the item.
I'm sorry, this sounds terribly confused, I know. I had another idea
to feed each line to a function, because no restaurant name has a
comma in it, and food offered always has a comma in it if the
restaurant offers more than one kind. But again, this seems really
brittle.
I guess we can't use objects (for some reason), but that doesn't
really matter because if I can't extract the data into dictionaries I
wouldn't have much use of an object either way. So yeah, my two
questions are these:
is there a better way to move through the text file other than a
really convoluted expression? And how do I add more than one value to
a key in a dictionary, if the values are added at different times and
there's no list created in the dictionary to begin with?
(I briefly though about initializing empty lists for each food type in
the dictionary and go with my horrible expressions, but that seems
like a cheap way out of a problem I'd rather tackle in a good way to
begin with)
Much thanks in advance.
First thing I'd do to make those lines clearer is to assign temp names
to each of those fields. For example, if you say
name =
then the other places that use name can be much more readable.
Likewise, if a particular name needs to be stripped or split before
being assigned, it's in one common place.
So the loop would start with four assignments, capturing usable versions
of those four lines. Then you'd have 3 assignments, updating the three
dictionaries from those four names. And one of those assignments would
update multiple dictionary items, it would actually be a loop.
You mention objects, which is one way to make things easier. But you
didn't mention functions. I think it'd be an improvement if each
dictionary had a function created to do its updating. Then the loop
that you're writing here would be four assignments, followed by 3
function calls.
Finally, you ask if there's a better way than readlines(). I don't
think there's any harm in doing it th
Re: [Tutor] Dictionaries and multiple keys/values
On 26/03/13 04:36, Robert Sjoblom wrote:
Georgie Porgie
87%
$$$
Canadian, Pub Food
So a 5 line pattern with 4 data fields. The last one containing multiple
comma separated values, potentially.
The three dictionaries are:
name_to_rating = {}
price_to_names = {'$': [], '$$': [], '$$$': [], '': []}
cuisine_to_names = {}
And the keys are all basic single data values
So far so good.
Now I've poked at this for a while now, and one idea I had, which I
worked on for quite a while, was that since the restaurants all start
at index 0, 5, 10 and so on, I could structure a while loop like this:
Sounds way too complicated.
I'd just read the file in groups of 5 lines and process them as I went.
I'd also write a helper function to process each record.
In pseudo code
def storeRestaurant(mdr):
name = mdr.readline()
rating = mdr.readline()
price = mdr.readline()
cuisines= mdr.readline().split(',')
# now assign values to dictionaries.
with openas mdr
while True:
try: storeRestaurant(mdr)
except end of file: pass
I'm sorry, this sounds terribly confused, I know. I had another idea
to feed each line to a function, because no restaurant name has a
comma in it, and food offered always has a comma in it if the
restaurant offers more than one kind. But again, this seems really
brittle.
I'm not sure why you think its brittle?
You need to code in error checking somewhere,
it might as well be hidden in a function.
I guess we can't use objects (for some reason),
Technically you can but maybe assignment wise you can't...
really convoluted expression? And how do I add more than one value to
a key in a dictionary, if the values are added at different times and
there's no list created in the dictionary to begin with?
You can create a list to begin with if you suspect you may need multiple
values ie each time you add a new key create a list.
The get() method should help here.
(I briefly though about initializing empty lists for each food type in
the dictionary and go with my horrible expressions,
You can do the empty lists without the horrible expressions!
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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[Tutor] PyDtls
I have installed PyDtls from the link:-" https://pypi.python.org/pypi/Dtls/0.1.0";. While creating the server and client objects in "sslconnection.py", it is referring to "x509.py" for certificates. Following error is occurring :- File "C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls\"x509.py",line 34 , in from openssl import * File"C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls\"openssl.py", line 74 in libcrypto=CDLL(release_cryptodll_path) File"C:\Python27\lib\ctypes\"_init_.py", line 365,in _init_ self_.handle=_dlopen(self._name,mode) WindowsError: [Error 126] The specified module could not be found. Please help me out to sort that error. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] PyDtls
On 03/26/2013 08:16 AM, Mousumi Basu wrote: I have installed PyDtls from the link:-" https://pypi.python.org/pypi/Dtls/0.1.0";. While creating the server and client objects in "sslconnection.py", it is referring to "x509.py" for certificates. Following error is occurring :- File "C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls\"x509.py",line 34 , in from openssl import * File"C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls\"openssl.py", line 74 in libcrypto=CDLL(release_cryptodll_path) File"C:\Python27\lib\ctypes\"_init_.py", line 365,in _init_ self_.handle=_dlopen(self._name,mode) WindowsError: [Error 126] The specified module could not be found. Please help me out to sort that error. Sounds to me like the DLL that implements the crypto is missing, in the wrong place, or has unmet dependencies. You can find out the name (and presumably the path) of the dll by looking at release_cryptodll_path. If it's indeed there, then I'd use the dependency walker (from the appropriate Windows ddk) to find whether there are any unmet dependencies. That assumes you haven't done anything obscure with the path, as the dependency walker needs to run with the same environment variables. -- DaveA ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Udp socket questio
Thank you for reading this.
I'm a bit out of my depth here. I'm attempting to set up a simple udp
client.
The example that follows results in an error message and I'm wondering
if I should be importing a different module. A Google search doesn't
support that idea.
''
udp socket client
Silver Moon
'''
import socket #for sockets
import sys #for exit
# create dgram udp socket
try:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
except socket.error:
print 'Failed to create socket'
sys.exit()
host = 'localhost';
port = ;
while(1) :
msg = raw_input('Enter message to send : ')
try :
#Set the whole string
s.sendto(msg, (host, port))
# receive data from client (data, addr)
d = s.recvfrom(1024)
reply = d[0]
addr = d[1]
print 'Server reply : ' + reply
except socket.error, msg:
print 'Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
sys.exit()
Traceback (most recent call last):
File "socket2.py", line 6, in
import socket #for sockets
File "/home/phil/Python/socket.py", line 7, in
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
AttributeError: 'module' object has no attribute 'AF_INET'
--
Regards,
Phil
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Re: [Tutor] Udp socket questio
On 03/26/2013 07:30 AM, Phil wrote:
Thank you for reading this.
I'm a bit out of my depth here. I'm attempting to set up a simple udp
client.
The example that follows results in an error message and I'm wondering
if I should be importing a different module. A Google search doesn't
support that idea.
''
udp socket client
Silver Moon
'''
import socket#for sockets
import sys#for exit
# create dgram udp socket
try:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
except socket.error:
print 'Failed to create socket'
sys.exit()
host = 'localhost';
port = ;
while(1) :
msg = raw_input('Enter message to send : ')
try :
#Set the whole string
s.sendto(msg, (host, port))
# receive data from client (data, addr)
d = s.recvfrom(1024)
reply = d[0]
addr = d[1]
print 'Server reply : ' + reply
except socket.error, msg:
print 'Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
sys.exit()
Traceback (most recent call last):
File "socket2.py", line 6, in
import socket #for sockets
File "/home/phil/Python/socket.py", line 7, in
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
AttributeError: 'module' object has no attribute 'AF_INET'
Looks to me like you have your own file socket.py in /home/phil/Python
and that it has the line that's causing the exception.
That file hides the one in the system library, so please rename it to
something else.
--
DaveA
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Re: [Tutor] PyDtls
On 26/03/13 12:16, Mousumi Basu wrote: I have installed PyDtls from the link:-"https://pypi.python.org/pypi/Dtls/0.1.0";. This list is for learning the python language and standard library. Anything beyond that you are taking pot luck whether anyone here knows about it. You would be better off asking on a specific Dtls forum or possibly on the general Python mailing list/newsgroup. comp.lang.python -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] PyDtls
On Tue, Mar 26, 2013 at 8:16 AM, Mousumi Basu wrote: > File"C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls\"openssl.py", > line 74 in You didn't install the package. Run "python setup.py install". This will install it to Lib\site-packages\Dtls and copy the pre-built DLLs into the package directory. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
I'm attempting to use setup.py to build an RPM, but ran into this error: [scarolan@cobbler:~/rpmbuild/BUILD/Python-2.7.3]$ python27 setup.py bdist_rpm File "setup.py", line 361 with open(tmpfile) as fp: ^ SyntaxError: invalid syntax error: Bad exit status from /var/tmp/rpm-tmp.8897 (%build) It appears the syntax error is striggered when "python setup.py build" is run from that temporary bash script (/var/tmp/rpm-tmp.8897): + cd /home/scarolan/rpmbuild/BUILD/Python-2.7.3/build/bdist.linux-x86_64/rpm/BUILD + cd Python-2.7.3 + env 'CFLAGS=-O2 -g -m64 -mtune=generic' python setup.py build File "setup.py", line 361 with open(tmpfile) as fp: ^ SyntaxError: invalid syntax Any ideas how to fix this? The documentation on this topic is quite scarce. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
On Wed, Mar 27, 2013 at 12:55 AM, Sean Carolan wrote: > I'm attempting to use setup.py to build an RPM, but ran into this error: > > [scarolan@cobbler:~/rpmbuild/BUILD/Python-2.7.3]$ python27 setup.py > bdist_rpm > > File "setup.py", line 361 > with open(tmpfile) as fp: > ^ > SyntaxError: invalid syntax > error: Bad exit status from /var/tmp/rpm-tmp.8897 (%build) > > It appears the syntax error is striggered when "python setup.py build" is > run from that temporary bash script (/var/tmp/rpm-tmp.8897): Could it be that it is taking the system python executable which is probably 2.4? -Amit. -- http://amitsaha.github.com/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
> Could it be that it is taking the system python executable which is > probably 2.4? > > -Amit. I've tried it with python24, python25 and python27 and all of them give the same error. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
Ok, so I'm now attempting a "clean room" installation using Python 2.7.3 to build the RPM. Here's my installation command: ./configure --with-zlib=/usr/include; make; sudo make install But the bdist_rpm setup command fails: [scarolan@titania:~/Python-2.7.3]$ python2.7 setup.py bdist_rpm error: pyconfig.h: No such file or directory error: Bad exit status from /var/tmp/rpm-tmp.67699 (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.67699 (%build) error: command 'rpmbuild' failed with exit status 1 Where is it looking for pyconfig.h? On Tue, Mar 26, 2013 at 10:18 AM, Sean Carolan wrote: > > Could it be that it is taking the system python executable which is >> probably 2.4? >> >> -Amit. > > > I've tried it with python24, python25 and python27 and all of them give > the same error. > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
On Tue, Mar 26, 2013 at 3:18 PM, Sean Carolan wrote: > > Could it be that it is taking the system python executable which is >> probably 2.4? >> >> -Amit. > > > I've tried it with python24, python25 and python27 and all of them give > the same error. > > What it looks like to me is that while you run (using python 2.7): > python27 setup.py bdist_rpm doing that generates a temporary bash script, which in turn runs: > python setup.py build which is linked to the system default python, which I'm guessing is 2.4. No matter which version you execute the first one with, the bash script generated will always try to use the system-default python. This is essentially a bug in the setup script; it should generate a script that uses the same python version it was executed with, ideally. The easiest workaround I can think of is a temporary alias, i.e.: $ alias python="python27" && python setup.by bdist_rpm && unalias python Or some variation of such. The more permanent fix is to change the bash script that setup.py generates so it's less naive about having the right system python installed, *or* upgrading the system python version. HTH, Hugo ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
> What it looks like to me is that while you run (using python 2.7): > > > python27 setup.py bdist_rpm > > doing that generates a temporary bash script, which in turn runs: > > > python setup.py build > Yea, I checked this, and /usr/local/bin/python is just a symlink pointing at /usr/local/bin/python2.7. Unfortunately Red Hat is slow to update their package versions; even the most recent RHEL6 comes with Python 2.6. I think if I can figure out where it wants that pyconfig.h file, it should work. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
Hi, On 26 March 2013 16:54, Hugo Arts wrote: > On Tue, Mar 26, 2013 at 3:18 PM, Sean Carolan wrote: > >> >> Could it be that it is taking the system python executable which is >>> probably 2.4? >>> >>> -Amit. >> >> >> I've tried it with python24, python25 and python27 and all of them give >> the same error. >> > > The easiest workaround I can think of is a temporary alias, i.e.: > > $ alias python="python27" && python setup.by bdist_rpm && unalias python > > Or some variation of such. The more permanent fix is to change the bash > script that setup.py generates so it's less naive about having the right > system python installed, *or* upgrading the system python version. > Sean you might also look into virtualenv. I suspect a suitably setup virtualenv will also avoid your problem, but is obviously more work than what Hugo's suggested. See for example this question on stackoverflow: http://stackoverflow.com/questions/1534210/use-different-python-version-with-virtualenv Walter ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
On Tue, Mar 26, 2013 at 11:18 AM, Sean Carolan wrote: > I've tried it with python24, python25 and python27 and all of them give the > same error. After looking at the source, I think the option python=python2.7 may solve the problem. http://hg.python.org/cpython/file/d321885ff8f3/Lib/distutils/command/bdist_rpm.py#l23 ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] PyDtls
On Tue, Mar 26, 2013 at 12:59 PM, Mousumi Basu wrote: > > I have run the following command previously in the command prompt:- > > C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls> > python setup.py install > > Was that incorrect?Please help me out as i am eager to learn about pydtls. That's fine, but the error messages you posted showed 'File "C:\dtls\ ', which is not correct. I see from the ctypes error that Python is installed in C:\Python27. Then the package (and the DLLs) should be located here: C:\Python27\Lib\site-packages\dtls You don't run it from there as a script, however. Python will find it along sys.path when you "import dtls". ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] PyDtls
On Tue, Mar 26, 2013 at 1:35 PM, eryksun wrote: >> C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0\dtls> >> python setup.py install >> >> Was that incorrect?Please help me out as i am eager to learn about pydtls. > > That's fine, On 2nd thought, that's not fine. setup.py is located in the parent directory. Make sure you're in the right directory: > C: > cd C:\dtls\Dtls-0.1.0.sdist_with_openssl.win32\Dtls-0.1.0 Run the setup script: > python setup.py install Run python and import dtls to test it: >>> import dtls >>> import ssl >>> hasattr(ssl, 'DTLS_OPENSSL_VERSION') False Now patch ssl: >>> dtls.do_patch() >>> ssl.DTLS_OPENSSL_VERSION 'OpenSSL 1.0.1c 10 May 2012' ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Dictionaries and multiple keys/values
* Robert Sjoblom [2013-03-26 05:36]:
>
> brittle. However, even if I was happy with that, I can't figure out
> what to do in the situation where:
> data[i+3] = 'Canadian, Pub Food' #should be two items, is currently a string.
> My problem is that I'm... stupid. I can split the entry into a list
> with two items, but even so I don't know how to add the key: value
> pair to the dictionary so that the value is a list, which I then later
> can append things to.
If your data is a list, then it will be a list in the dict. You could
just make it so that particular key always contains a list of
characteristics, even if it's a list of only one.
>>> data = 'Canadian, Pub Food'.split(',')
>>> data
['Canadian', ' Pub Food']
>>> data = 'French'.split(',')
>>> data
['French']
Then just put the list as the value.
d['characteristics'] = data
>>> data = 'Canadian, Pub Food'.split(',')
>>> d['characteristics'] = data
>>> d['characteristics']
['Canadian', ' Pub Food']
--
David Rock
da...@graniteweb.com
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Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
> > http://hg.python.org/cpython/file/d321885ff8f3/Lib/distutils/command/bdist_rpm.py#l23 > No dice. [scarolan@titania:~/Python-2.7.3]$ alias | grep python alias python='/usr/local/bin/python2.7' [scarolan@titania:~/Python-2.7.3]$ /usr/local/bin/python2.7 setup.py bdist_rpm error: pyconfig.h: No such file or directory error: Bad exit status from /var/tmp/rpm-tmp.14555 (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.14555 (%build) error: command 'rpmbuild' failed with exit status 1 Has anyone on this list successfully built a python 2.7 RPM using this command? python2.7 setup.py bdist_rpm If so, what was your secret? ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
> If so, what was your secret?
>
>
I tried running this again with strace, and it looks like it's finding the
pyconfig.h file:
open("/usr/local/include/python2.7/pyconfig.h", O_RDONLY) = 4
read(4, "/* pyconfig.h. Generated from p"..., 4096) = 4096
stat("pyconfig.h", {st_mode=S_IFREG|0664, st_size=36037, ...}) = 0
stat("pyconfig.h.in", {st_mode=S_IFREG|0644, st_size=34336, ...}) = 0
stat("PC/pyconfig.h", {st_mode=S_IFREG|0644, st_size=20770, ...}) = 0
stat("PC/os2vacpp/pyconfig.h", {st_mode=S_IFREG|0644, st_size=10113, ...})
= 0
stat("PC/os2emx/pyconfig.h", {st_mode=S_IFREG|0644, st_size=8096, ...}) = 0
stat("Include/pyconfig.h", {st_mode=S_IFREG|0664, st_size=36037, ...}) = 0
stat("build/bdist.linux-x86_64/rpm/BUILD/Python-2.7.3/pyconfig.h",
{st_mode=S_IFREG|0664, st_size=36037, ...}) = 0
stat("build/bdist.linux-x86_64/rpm/BUILD/Python-2.7.3/Include/pyconfig.h",
{st_mode=S_IFREG|0664, st_size=36037, ...}) = 0
stat("RISCOS/pyconfig.h", {st_mode=S_IFREG|0644, st_size=18510, ...}) = 0
open("/usr/local/include/python2.7/pyconfig.h", O_RDONLY) = 3
read(3, "/* pyconfig.h. Generated from p"..., 4096) = 4096
error: pyconfig.h: No such file or directory
/usr/local/include/python2.7/pyconfig.h exists:
[scarolan@titania:~/Python-2.7.3]$ ls
/usr/local/include/python2.7/pyconfig.h -l
-rw-r--r-- 1 root root 36037 Mar 26 11:45
/usr/local/include/python2.7/pyconfig.h
I'm not sure exactly what the installer is expecting here...
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Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
On 26/03/13 19:04, Sean Carolan wrote: Has anyone on this list successfully built a python 2.7 RPM using this command? python2.7 setup.py bdist_rpm Given that most folks on this list are only learning Python its pretty unlikely that they are building bespoke RPMs... You might find more experience of RPM building on the general Python mailing list/newsgroup. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
> Given that most folks on this list are only learning Python its pretty > unlikely that they are building bespoke RPMs... > > You might find more experience of RPM building on the general Python > mailing list/newsgroup. Sorry 'bout that. I'll follow up with the bug report and possibly the general list as well. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
Sean Carolan wrote: > [Alan Gauld wrote:] > > Given that most folks on this list are only learning Python its pretty > > unlikely that they are building > > bespoke RPMs... > > > > You might find more experience of RPM building on the general Python > > mailing list/newsgroup. > > Sorry 'bout that. I'll follow up with the bug report and possibly the > general list as well. Please post your solution back (if you find one), for archive completeness. And my curiosity. :) ~Ramit This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
On Wed, Mar 27, 2013 at 7:32 AM, Sean Carolan wrote: > >> Given that most folks on this list are only learning Python its pretty >> unlikely that they are building bespoke RPMs... >> >> You might find more experience of RPM building on the general Python >> mailing list/newsgroup. > > > Sorry 'bout that. I'll follow up with the bug report and possibly the > general list as well. I am going to try doing this sometime today. I shall let you know if I find a solution or my observations. Best, Amit. -- http://amitsaha.github.com/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Building Python 2.7.3 on RHEL 5.8 x86_64 -- Syntax Error
On Wed, Mar 27, 2013 at 7:32 AM, Sean Carolan wrote: > >> Given that most folks on this list are only learning Python its pretty >> unlikely that they are building bespoke RPMs... >> >> You might find more experience of RPM building on the general Python >> mailing list/newsgroup. > > > Sorry 'bout that. I'll follow up with the bug report and possibly the > general list as well. FWIW, I tried the same thing with Python 3 sources on Fedora 18, and got the same error as you. But, where did you get the idea that you could build Python RPMs using $python setup.py bdist_rpm ? I thought that was only limited to building RPMs for python packages (including extensions), but not the Python interpreter itself. Please correct me if i am wrong. Okay, here is something for you to try in the meantime. Download the Python 2.7 SRPM (source RPM) from http://koji.fedoraproject.org/koji/packageinfo?packageID=130. May be the F17 version. Extract it to get the source files, patches and the SPEC file. If you are familiar with building RPM packages by hand, please try building it like any other package. That is, by copying the .spec file to SPECS and the .patch, .xz and other files in SOURCES and then doing rpmbuild -ba python.spec from the SPECS directory. Oh yes, please install the dependencies for building the package first by doing, yum-builddep before doing the build. It seems like it built the RPMs alright on my laptop. See if that helps. Best, Amit. -- http://amitsaha.github.com/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Udp socket questio
On 26/03/13 23:15, Dave Angel wrote: Traceback (most recent call last): File "socket2.py", line 6, in import socket #for sockets File "/home/phil/Python/socket.py", line 7, in s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) AttributeError: 'module' object has no attribute 'AF_INET' Looks to me like you have your own file socket.py in /home/phil/Python Thanks Dave, I woke up during the early hours of the morning and realised what was going on. The name of my python file was not the same as the module but it was prefixed "socket" and than seems to be enough to cause a problem. The udp client still doesn't do what I want but at least the example runs without an error. -- Regards, Phil ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] HELP: Creating animation from multiple plots
Dear All, I am a newbie to Python but have a fair know how of other languages i.e C etc. I want to run an astrophysical simulation in Python. All I have to do it to generate a set of 'plots' depending on a varying parameter and then stitch them up. 1) Is it possible to automatically generate different data files( say in the orders of 1000) with different names depending on a parameter? 2) Is it possible to plot the data sets right from Python itself and save the plots in different jpeg files to stitched upon later on. Awaiting your reply. Thank you in advance. Sincerely, Sayan -- -- *Sayan Chatterjee* Dept. of Physics and Meteorology IIT Kharagpur Lal Bahadur Shastry Hall of Residence Room AB 205 Mob: +91 9874513565 blog: www.blissprofound.blogspot.com Volunteer , Padakshep www.padakshep.org ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] HELP: Creating animation from multiple plots
Hi Sayan, On Wed, Mar 27, 2013 at 4:14 PM, Sayan Chatterjee wrote: > Dear All, > > I am a newbie to Python but have a fair know how of other languages i.e C > etc. > > I want to run an astrophysical simulation in Python. All I have to do it to > generate a set of 'plots' depending on a varying parameter and then stitch > them up. > > 1) Is it possible to automatically generate different data files( say in the > orders of 1000) with different names depending on a parameter? It certainly is. Are you talking about the file names being file_1001.txt, file_1002.txt and so on? If yes, let's say your parameter values are stored in param. Then something like this would do the trick: param_values = [1000,1001, 1005, 2001] for param in param_values: fname = 'file_' + str(param) # write to file fname # # Sorry if its different from what you are looking for. But yes, its certainly possible. > > 2) Is it possible to plot the data sets right from Python itself and save > the plots in different jpeg files to stitched upon later on. It is possible to generate plots and save each as JPEGs. [1]. What do you mean by stitching together? [1] http://stackoverflow.com/questions/8827016/matplotlib-savefig-in-jpeg-format Best, Amit -- http://amitsaha.github.com/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] HELP: Creating animation from multiple plots
On Wed, Mar 27, 2013 at 4:23 PM, Amit Saha wrote: > Hi Sayan, > > On Wed, Mar 27, 2013 at 4:14 PM, Sayan Chatterjee > wrote: >> Dear All, >> >> I am a newbie to Python but have a fair know how of other languages i.e C >> etc. >> >> I want to run an astrophysical simulation in Python. All I have to do it to >> generate a set of 'plots' depending on a varying parameter and then stitch >> them up. >> >> 1) Is it possible to automatically generate different data files( say in the >> orders of 1000) with different names depending on a parameter? > > It certainly is. Are you talking about the file names being > file_1001.txt, file_1002.txt and so on? If yes, let's say your > parameter values are stored in param. Then something like this would > do the trick: > > param_values = [1000,1001, 1005, 2001] > > for param in param_values: > fname = 'file_' + str(param) > > ># write to file fname ># ># > > > Sorry if its different from what you are looking for. But yes, its > certainly possible. > > >> >> 2) Is it possible to plot the data sets right from Python itself and save >> the plots in different jpeg files to stitched upon later on. > > It is possible to generate plots and save each as JPEGs. [1]. > > What do you mean by stitching together? You probably meant creating an animation from them. Yes, it is certainly possible. I will try to find a link which makes it really easy to create an animation out of a bunch of images. Which operating system are you on? -Amit. -- http://amitsaha.github.com/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] HELP: Creating animation from multiple plots
Thanks a lot for your prompt reply. 1. Yes. This is exactly what I wanted. Creating a bunch of data sets and then writing script to plot them using gnuplot, but if something can produce directly 'plots' it will certainly be helpful. 2. Yes. By stitching them up I meant an animation.Sorry for the ambiguity. Exactly how we can do it Octave. Pls see this link: http://www.krizka.net/2009/11/06/creating-animations-with-octave/ I think Python is THE language, which may come to an immediate rescue. My OS is Linux Mint (Gnome 3) Sayan On 27 March 2013 11:57, Amit Saha wrote: > On Wed, Mar 27, 2013 at 4:23 PM, Amit Saha wrote: > > Hi Sayan, > > > > On Wed, Mar 27, 2013 at 4:14 PM, Sayan Chatterjee > > wrote: > >> Dear All, > >> > >> I am a newbie to Python but have a fair know how of other languages i.e > C > >> etc. > >> > >> I want to run an astrophysical simulation in Python. All I have to do > it to > >> generate a set of 'plots' depending on a varying parameter and then > stitch > >> them up. > >> > >> 1) Is it possible to automatically generate different data files( say > in the > >> orders of 1000) with different names depending on a parameter? > > > > It certainly is. Are you talking about the file names being > > file_1001.txt, file_1002.txt and so on? If yes, let's say your > > parameter values are stored in param. Then something like this would > > do the trick: > > > > param_values = [1000,1001, 1005, 2001] > > > > for param in param_values: > > fname = 'file_' + str(param) > > > > > ># write to file fname > ># > ># > > > > > > Sorry if its different from what you are looking for. But yes, its > > certainly possible. > > > > > >> > >> 2) Is it possible to plot the data sets right from Python itself and > save > >> the plots in different jpeg files to stitched upon later on. > > > > It is possible to generate plots and save each as JPEGs. [1]. > > > > What do you mean by stitching together? > > You probably meant creating an animation from them. Yes, it is > certainly possible. I will try to find a link which makes it really > easy to create an animation out of a bunch of images. Which operating > system are you on? > > -Amit. > > > > -- > http://amitsaha.github.com/ > -- -- *Sayan Chatterjee* Dept. of Physics and Meteorology IIT Kharagpur Lal Bahadur Shastry Hall of Residence Room AB 205 Mob: +91 9874513565 blog: www.blissprofound.blogspot.com Volunteer , Padakshep www.padakshep.org ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] HELP: Creating animation from multiple plots
On Wed, Mar 27, 2013 at 4:36 PM, Sayan Chatterjee wrote: > Thanks a lot for your prompt reply. > > 1. Yes. This is exactly what I wanted. Creating a bunch of data sets and > then writing script to plot them using gnuplot, but if something can produce > directly 'plots' it will certainly be helpful. Yes, indeed it is possible. You may want to explore matplotlib a bit. You can start with this tutorial [1]. [1] http://www.loria.fr/~rougier/teaching/matplotlib/ > > 2. Yes. By stitching them up I meant an animation.Sorry for the ambiguity. > Exactly how we can do it Octave. > > Pls see this link: > http://www.krizka.net/2009/11/06/creating-animations-with-octave/ Right, yes, if you see it uses mencoder/ffmpeg to create the animation. So, if you save your individual plots and then use one of these tools, you should be able to get the animation done. Matplotlib itself seems to have some Animated plotting capabilities, but I haven't had any experience with them. Best, Amit. -- http://amitsaha.github.com/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] HELP: Creating animation from multiple plots
Yes, ffmpeg will do if multiple plots can be generated using mathplotlib . I'll look up the links you provided and get back to you, if I can't figure it out. :) On 27 March 2013 12:12, Amit Saha wrote: > On Wed, Mar 27, 2013 at 4:36 PM, Sayan Chatterjee > wrote: > > Thanks a lot for your prompt reply. > > > > 1. Yes. This is exactly what I wanted. Creating a bunch of data sets and > > then writing script to plot them using gnuplot, but if something can > produce > > directly 'plots' it will certainly be helpful. > > Yes, indeed it is possible. You may want to explore matplotlib a bit. > You can start with this tutorial [1]. > > [1] http://www.loria.fr/~rougier/teaching/matplotlib/ > > > > > 2. Yes. By stitching them up I meant an animation.Sorry for the > ambiguity. > > Exactly how we can do it Octave. > > > > Pls see this link: > > http://www.krizka.net/2009/11/06/creating-animations-with-octave/ > > Right, yes, if you see it uses mencoder/ffmpeg to create the > animation. So, if you save your individual plots and then use one of > these tools, you should be able to get the animation done. > > Matplotlib itself seems to have some Animated plotting capabilities, > but I haven't had any experience with them. > > > Best, > Amit. > > > -- > http://amitsaha.github.com/ > -- -- *Sayan Chatterjee* Dept. of Physics and Meteorology IIT Kharagpur Lal Bahadur Shastry Hall of Residence Room AB 205 Mob: +91 9874513565 blog: www.blissprofound.blogspot.com Volunteer , Padakshep www.padakshep.org ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
