win32- system call - getting results back into python

[gregpinero]

Hey everyone,

I'm trying to call a system command "svnlook log \arms" from within
python and process the results. However I'm having trouble getting the
results of the command back into python. I'm using windows if that
matters.

Here's what I have so far:

os.system("svnlook") #works but doesn't give me the output from
svnlook, just the status

commands.gettegetstatusoutput("svnlook") only works in unix?

Here's my final code which really <should> work:

pipe=os.popen("svnlook log \arms") #works from console
text=pipe.read()
print text

I get blank

However this works fine and gives me many lines of output:
pipe=os.popen("dir")
text=pipe.read()
print text

Any idea what I'm doing wrong? When I call my command from the command
prompt in windows I get a line of text. By the way, I tried posting
this on the subversion group but I'm thinking maybe it's a python
question, or both?

Thanks,

Greg

[runes]

You wil have to use r"svnlook log \arms") or "svnlook log \\arms") to
escape the "\".

Popen usually return a file-like object, so you maye to use file
methods like .read()

ex:
d = os.popen('dir /b')
print d.read()

[Peter Hansen]

gr********@gmail.com wrote:

I'm trying to call a system command "svnlook log \arms" from within
python and process the results. However I'm having trouble getting the
results of the command back into python. I'm using windows if that
matters.

As "runes" pointed out, you are getting caught by the \a escape sequence.

A better solution in this particular case is to see that the SVN
utilities all understand forward slashes just fine, so you can use
"svnlook log /arms" and it should work.

Note that there is also a Python library that wraps the SVN interface so
you could also skip the direct calls to svnlook and do this with Python
calls instead. Google for "pysvn" for more.

-Peter