[Python-au] Windows Python different than Linux Python

Mike Dewhirst miked at dewhirst.com.au
Tue Oct 11 09:39:59 CEST 2005

Graham Dumpleton wrote:
> Check the first line of your .py file. When running as CGI on UNIX it
> would need a #! line as first line to indicate the interpreter to run to
> interpret the remainder of the file. On UNIX systems this is often
> written as:
>   #!/usr/bin/env python
> This though wouldn't necessarily be appropriate on Win32 presuming that
> still comes into play.
> I don't actually use Win32, so hope this is of help, but have seen
> issues with this for people going from Win32 to UNIX and where the line
> wasn't correct.
> Graham

Graham and Wilson - thanks for the quick response. I've been trying things.

My Python is installed in Windows in c:\usr\bin which is also where it 
is in SuSE Linux. I did that because I want to run the scripts unchanged 
on either platform.

My shebang line is #!/usr/bin/python

In the /srv/www/cgi-bin/ directory in a bash shell 'which python' gives 
me /usr/bin/python which exactly matches #!/usr/bin/python

./test_regid.py fails with : bad interpreter : No such file or directory

However in the same directory, 'python test_regid.py' runs all the unit 
tests successfully. In fact all the unit tests for all scripts run fine.

I was logged in as mdewhirst and have myself in the www group. I get 
identical results when logged in as root.

I wrote the scripts in Windows. Would they have \r\n line endings which 
are stuffing up the shebang lines??


> Wilson Afonso wrote:
>> On 11/10/05, Mike Dewhirst <miked at dewhirst.com.au> wrote:
>>>Does import work differently in Linux (python 2.3) than Windows (python
>>>2.4) ???
>>>... and all works fine with Apache 2.0.54 on Tosh. Under SuSE 9.1 linux,
>>>it doesn't. Apache 2.0.53 is giving an error (see below) which Mr Google
>>>indicates is a bad path to a file. All the scripts including fcrypt are
>>>in the same /srv/www/cgi-bin/ directory and the above imports must
>>>surely be on the path somewhere.
>> The error doesn't look like import is failing; the problem happens
>> before the script even starts. This error:
>>>[Tue Oct 11 14:18:32 2005] [error] [client] (2)No such file
>>>or directory: exec of '/srv/www/cgi-bin/collect.py' failed, referer:
>> means that Apache failed to open the script. That either means that
>> /srv/www/cgi-bin/collect.py does not exist, or that the web server has
>> no permissions to open it, or that it specifies an interpreter which
>> does not exist (in the first line of the script, starting with "#!").
>> The script never started, to Python never had a chance to do an
>> 'import'.
>> Can you cd into that directory and run "./collect.py"? If so, does the
>> web server have permissions to do the same (not only for the script,
>> but for all the directories in the path)? If not, check that the path
>> to Python is correct inside the script. From your description, I'm
>> betting on a wrong path to Python as the most likely cause of the
>> problem (as you say other scripts in the same directory run
>> correctly).
>> -Wilson
>> --
>> Wilson Roberto Afonso        wafonso at gmail.com
>> http://www.netwhatever.com/

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