Re: [Tutor] Optparse question: if only certain values are acceptable
"Terry Carroll" wrote The toy summary is that I want to have the following command format: prognam -f FORMAT Where FORMAT, if specified, must be one of "X", "Y", or "Z". In otherwords, if the user enters: progname -f X It runs, producing its output in format X. Similar if "Y" or "Z" is specified instead of "X". But if the user specifies progname -f A I want it to spit up because A is not a recognized format. I don't see anything in the docs that directly addresses this. Is this something that I should use the callback parameter for? Which part do you not understand or do you believe is not addresssed? optparse can certainly allow you to specify the -f option and store the user entered value. Your code will have to act accordingly based on the value, optparse won't do that bit. And for the invalid option value I think you can handle that too, in an else clause. Thats the easiest way to use it IMHO. You can define a callback for your option but with only one option I dont see much point, you still need the value if/else inside the callback. You can define the list of values too (via choice) but again catching anything other than X,Y,Z is just as easy using an else clause in your case. HTH, -- Alan Gauld Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Optparse question: if only certain values are acceptable
On Fri, May 8, 2009 at 9:09 PM, Terry Carroll wrote: > It's exactly what I was looking for. Thanks very much. > > Now I'm going to have to re-read the docs and see why I couldn't pick that > up from them. You have to read pretty far down, to the sections on Option attributes and Standard Option Types http://docs.python.org/library/optparse.html#option-attributes http://docs.python.org/library/optparse.html#standard-option-types Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Pythonic way to normalize vertical whitespace
Le Fri, 08 May 2009 13:03:47 -0400, pyt...@bdurham.com s'exprima ainsi: [...] > Approaches: > 1. split text to list of lines that get stripped then: > a. walk this list building a new list of lines that track and > ignore extra blank lines > -OR- > b. re-join lines and replace '\n\n\n' wth' \n\n' until no more > '\n\n\n' matches exist > 2. use regular expressions to match and replace whitespace > pattern of 3 or more adjacent \n's with surrounding whitespace > 3. a 3rd party text processing library designed for efficiently > cleaning up text > Thanks! You should try 1a and 1b if only to have written the code at least once ;-) The set of python string methods is very complete and practicle. Still, in this case, 2 is rather straightforward and simple. If you cannot figure out the proper pattern, have a look at http://www.amk.ca/python/howto/regex/ and/or ask again the list. Denis -- la vita e estrany ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Code Dosent work.
Jacob Mansfield wrote: not sure why i was using pygame, anyway the problem is with the saveing, press exit, the program will save to databox.txt, then start the program again giveing it the filename that it saved to, then look at the records. Post the code you have now and I am sure someone can help point you in the right direction. -david -- Powered by Gentoo GNU/Linux http://linuxcrazy.com ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] paramiko again
Hello again. This code comes straight from the http://oreilly.com/catalog/9780596515829/ book. The only actual code I changed was s/get/put on the second to last line. The author says I ought to be able to do this and have it Just Work. There are several things I don't understand. Would be nice if the books' author was on this list so I could ask him directly. Heh. The code runs but does not upload any files. I would rather be specifying the local dir on the source machine rather than path on the destination. 1. How can paramiko know whether the dir_path is on the local vs remote system? 2. I can't find sftp.put or sftp.get in ipython. Are they part of paramiko? If not, where do they come from? Thanks for any insight. --- begin -- #!/usr/bin/env python import paramiko import os hostname = '192.168.1.15' port = 22 username = 'revjimjones' password = 'C0ol4id3' dir_path = '/home/revjimjones/logs' if __name__ == "__main__": t = paramiko.Transport((hostname, port)) t.connect(username=username, password=password) sftp = paramiko.SFTPClient.from_transport(t) files = sftp.listdir(dir_path) for f in files: print 'Uploading', f sftp.put(os.path.join(dir_path, f), f) t.close() end --- -- I fear you speak upon the rack, Where men enforced do speak anything. - William Shakespeare ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] paramiko again
Matt Herzog wrote: Hello again. This code comes straight from the http://oreilly.com/catalog/9780596515829/ book. The only actual code I changed was s/get/put on the second to last line. The author says I ought to be able to do this and have it Just Work. There are several things I don't understand. Would be nice if the books' author was on this list so I could ask him directly. Heh. The code runs but does not upload any files. I would rather be specifying the local dir on the source machine rather than path on the destination. 1. How can paramiko know whether the dir_path is on the local vs remote system? 2. I can't find sftp.put or sftp.get in ipython. Are they part of paramiko? If not, where do they come from? Thanks for any insight. --- begin -- #!/usr/bin/env python import paramiko import os hostname = '192.168.1.15' port = 22 username = 'revjimjones' password = 'C0ol4id3' dir_path = '/home/revjimjones/logs' if __name__ == "__main__": t = paramiko.Transport((hostname, port)) t.connect(username=username, password=password) sftp = paramiko.SFTPClient.from_transport(t) files = sftp.listdir(dir_path) for f in files: print 'Uploading', f sftp.put(os.path.join(dir_path, f), f) t.close() end --- Your going to have to read up on it. Download the source here; http://github.com/robey/paramiko/downloads Then look at the demos folder where you will see an example for sftp like; # now, connect and use paramiko Transport to negotiate SSH2 across the connection try: t = paramiko.Transport((hostname, port)) t.connect(username=username, password=password, hostkey=hostkey) sftp = paramiko.SFTPClient.from_transport(t) ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Parsing Question
Forgive me if I'm asking something stupid, but I'm not sure how to do this (there are so many options in Python, I'm overwhelmed and confused). I have a text file that looks like this: 1 the 126 name 2 of 127 very 3 to 128 through 4 and 129 just 5 a 130 form 6 in 131 much 7 is 132 great etc... Each has 2 numbers and 2 words on it. Each number is related to the word that comes after it. So "1" and "the" are connected (kinda like a dictionary), and "126" and "name" are related. Using the above text file as an input, I'm trying to make an output that lists all the words, one word per line, but none of the numbers. I was hoping to get the words listed in order of their related numbers. So, the output needs to look like: the of to (skip to the 127th line) very through just I can open and loop over the text, I'm just not sure what commands I should use to parse each line. Can anyone give me suggestions or examples? ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Different Command Result Executing in Shell vs. Program
Hi. I've not been working with Python very long and have run into a puzzling
thing. I'm working on a program that needs to identify the filetype of files
without extensions. Using the file command in the shell works fantastic, as in:
rob...@ubuntu:~$ file -b linuxlogotag
JPEG image data, JFIF standard 1.01
I want to be able to perform the same task in a program for batch processing.
After a bit of research, I found that I can execute the shell command from
within a Python program using:
import os
os.system('file -b /home/robert/linuxlogotag')
This also works fine. The problem is that when I try to replace the hard coded
path/name with a string variable for looping, the results are not the same as
the shell's. Here's the modified code I'm using for testing (the original code
is from Bogdan's blog at http://bogdan.org.ua/).
import os, glob
path = '/home/robert'
for infile in glob.glob( os.path.join(path, '*.*') ):
testCommand = "'file -b " + infile + "'"
print testCommand,
test = os.system(testCommand)
print test
The code does indeed step through all the files in the directory and the
testCommand string constructs properly. Yet, the output is not the same as
shell results. All files, regardless of type, simply output the number 32512,
with no description.
I have searched forums, read the man file and perused several Python
references and have not been able to find the answer. Why does the same command
yield different results, depending on how it's run? Any education is greatly
appreciated.
Linux 2.6 (kubuntu 8.04)
Python 2.5.2
file command 4.21
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Re: [Tutor] paramiko again
"Matt Herzog" wrote This code comes straight from the http://oreilly.com/catalog/9780596515829/ book. The only actual code I changed was s/get/put on the second to last line. The author says I ought to be able to do this and have it Just Work. There are several things I don't understand. What are they? You raise a few issues below but are they all? The code runs but does not upload any files. How do you know? Where are you looking for them? What are you looking for? I would rather be specifying the local dir on the source machine rather than path on the destination. Have you used normal ftp in its command line version? The put command specifies the location on the remote machine where you want to store the files. This is normal ftp behaviour. 1. How can paramiko know whether the dir_path is on the local vs remote system? It always expects it to be on the remote machine I guess. 2. I can't find sftp.put or sftp.get in ipython. Are they part of paramiko? Yes. sftp is an object that you create with a call from paramiko. The class exists in paramiko and you create an instance of it called sftp. sftp = paramiko.SFTPClient.from_transport(t) If not, where do they come from? So get./put will be methods of whatever class SFTPClient.from_transport() returns an instance of. --- begin -- #!/usr/bin/env python import paramiko import os hostname = '192.168.1.15' port = 22 username = 'revjimjones' password = 'C0ol4id3' dir_path = '/home/revjimjones/logs' if __name__ == "__main__": t = paramiko.Transport((hostname, port)) t.connect(username=username, password=password) sftp = paramiko.SFTPClient.from_transport(t) files = sftp.listdir(dir_path) This gets a list of the files from dir_path on the remote machine. for f in files: print 'Uploading', f sftp.put(os.path.join(dir_path, f), f) So you are trying to upload files that currently exist on the remote machine from your machine, that is unlikely to work. It would only work if you happen to have files of exactly the same name (updated versions maybe?). In that case you will overwrite the remote server versions with your local copy. I suspect you probably need to change the listdir() call to use os.listdir(local_path) instead of stftp.listdir(). Where local_path is wherever you store the files on the local mnachine that you want to transfer. HTH, -- Alan Gauld Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Parsing Question
On 5/9/2009 4:23 PM Michael Morrissey said... Forgive me if I'm asking something stupid, but I'm not sure how to do this (there are so many options in Python, I'm overwhelmed and confused). Look into the split method of string objects (which are what you should be reading from the file), then look into indexing the resulting list objects. That should focus your attentions... Emile I have a text file that looks like this: 1 the 126 name 2 of 127 very 3 to 128 through 4 and 129 just 5 a 130 form 6 in 131 much 7 is 132 great etc... Each has 2 numbers and 2 words on it. Each number is related to the word that comes after it. So "1" and "the" are connected (kinda like a dictionary), and "126" and "name" are related. Using the above text file as an input, I'm trying to make an output that lists all the words, one word per line, but none of the numbers. I was hoping to get the words listed in order of their related numbers. So, the output needs to look like: the of to (skip to the 127th line) very through just I can open and loop over the text, I'm just not sure what commands I should use to parse each line. Can anyone give me suggestions or examples? ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Parsing Question
"Michael Morrissey" wrote a text file that looks like this: 1 the 126 name 2 of 127 very Each has 2 numbers and 2 words on it. Each number is related to the word that comes after it. So "1" and "the" are connected (kinda like a dictionary), and "126" and "name" are related. Using the above text file as an input, I'm trying to make an output that lists all the words, one word per line, but none of the numbers. I was hoping to get the words listed in order of their related numbers. So, the I can open and loop over the text, I'm just not sure what commands I should use to parse each line. Can anyone give me suggestions or examples? For this a simple split() command should give you a list of 4 items. I suggest you store each pair in a tuple (num, word) and put the tuples in a list. You can then sort the list and the tuples will be in numeric order (element 0). Then iterate over the list printing the word (element 1 of the tuple) In pseudo code: words = [] for line in open(fname): four = line.split() words.append( (four[0],four[1]) ) words.append( (four[2],four[3]) ) for word in sorted(words): print word[1] You should probably be able to do the first for loop as a list comprehension, but I can't think of how to get the split() call embedded into it right now! HTH, -- Alan Gauld Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] paramiko again
On Sun, May 10, 2009 at 12:53:49AM +0100, Alan Gauld wrote: > Have you used normal ftp in its command line version? > The put command specifies the location on the remote machine > where you want to store the files. This is normal ftp behaviour. The server supports only sftp. Yeah, I could turn on ftp on some server but that would be more work. Heh. > Yes. sftp is an object that you create with a call from paramiko. > The class exists in paramiko and you create an instance of it > called sftp. Oh. I could call it anything, not that I'd want to. Thanks. I kept thinking I could find it using ipython. > So you are trying to upload files that currently exist on the > remote machine from your machine, that is unlikely to work. Yes. That was not the plan though. Heh. > I suspect you probably need to change the listdir() call to use > os.listdir(local_path) instead of stftp.listdir(). Where local_path > is wherever you store the files on the local mnachine that you > want to transfer. Yes, that is exactly what I wanted, os.listdir. But now I have another issue: specifying the remote dir. When I login to the sftp server and type pwd: sftp> pwd Remote working directory: / Is what I see. Also, I don't think I want "join" in the below, do I? Why do I want to "join" the two dirs? As far as I'm concerned, I just want to dump files into the only dir I can reach, which is "/" on the remote host's jail. sftp.get(os.path.join(dir_path, f), f) > > HTH, It did help. Many thanks! > > -- > Alan Gauld > Author of the Learn to Program web site > http://www.alan-g.me.uk/ > > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor -- I fear you speak upon the rack, Where men enforced do speak anything. - William Shakespeare ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Different Command Result Executing in Shell vs. Program
"robert mcquirt" wrote
import os
os.system('file -b /home/robert/linuxlogotag')
This also works fine. The problem is that when I try to replace
the hard coded path/name with a string variable for looping,
the results are not the same as the shell's.
import os, glob
path = '/home/robert'
for infile in glob.glob( os.path.join(path, '*.*') ):
testCommand = "'file -b " + infile + "'"
print testCommand,
test = os.system(testCommand)
The problem is that the return code from os.system is the
exit code of the command being executed - usually 0 for
success or an error code. What you want is to actually
capture the output of the command. To do that you need
to look at the subprocess module which provides several
examples of what you want.
output is not the same as shell results. All files, regardless
of type, simply output the number 32512, with no description.
That is the exit code of the file -b command. You would
need to look at the file documentation to find out what
it signifies!
PS. You can also find some simple examples using
subprocess in the Using the OS topic of my tutorial.
HTH,
Alan G.
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[Tutor] Triggering code on 1 minute intervale ..
.. What will be the best solution to trigger python code every minute as soon as PC in on. Cheers, Alex ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Triggering code on 1 minute intervale ..
On Sat, May 9, 2009 at 3:26 PM, Alex Feddor wrote: > .. What will be the best solution to trigger python code every minute as > soon as PC in on. > an autorun script... and in your script use the time.sleep(60) I believe. HTH, Wayne ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Different Command Result Executing in Shell vs. Program
robert mcquirt wrote:
Hi. I've not been working with Python very long and have run into a puzzling
thing. I'm working on a program that needs to identify the filetype of files
without extensions. Using the file command in the shell works fantastic, as in:
rob...@ubuntu:~$ file -b linuxlogotag
JPEG image data, JFIF standard 1.01
I want to be able to perform the same task in a program for batch processing. After a bit of research, I found that I can execute the shell command from within a Python program using:
import os
os.system('file -b /home/robert/linuxlogotag')
This also works fine. The problem is that when I try to replace the hard coded path/name with a string variable for looping, the results are not the same as the shell's. Here's the modified code I'm using for testing (the original code is from Bogdan's blog at http://bogdan.org.ua/).
import os, glob
path = '/home/robert'
for infile in glob.glob( os.path.join(path, '*.*') ):
?testCommand = "'file -b " + infile + "'"
?print testCommand,
?test = os.system(testCommand)
?print test
The code does indeed step through all the files in the directory and the testCommand string constructs properly. Yet, the output is not the same as shell results. All files, regardless of type, simply output the number 32512, with no description.
I have searched forums, read the man file and perused several Python references and have not been able to find the answer. Why does the same command yield different results, depending on how it's run? Any education is greatly appreciated.
Linux 2.6 (kubuntu 8.04)
Python 2.5.2
file command 4.21
I think you have an extra set of quotes. Remove the single quotes from
the testCommand and see if that works any better.
testCommand = "file -b " + infile
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Re: [Tutor] Triggering code on 1 minute intervale ..
Alex Feddor wrote: .. What will be the best solution to trigger python code every minute as soon as PC in on. Cheers, Alex ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor A cron job? Regards Dayo ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Fwd: Sending Email - Outlook 2003 / Overcome Security Warning!
Hi
I would like to send email inside my Python code. On PC I have installed
Outlook 2003. On the web I found code bellow which is working however I need
every time manual clicked outlook security warning - alerting that outside
process would like to send email. Please advise how the security warning can
be tricked...
Here is working code sample:
from win32com.client import Dispatch
session = Dispatch("MAPI.session")
session.Logon('OUTLOOK') # MAPI profile name
msg = session.Outbox.Messages.Add('Hellow', 'Test Message 400')
msg.Recipients.Add('ales',
'SMTP:alex.fed...@gmail.com
')
msg.Send()
session.Logoff()
On the web I found solution for VB.NET
