Be aware that by default the Apache web server _WILL_ use the shebang line
even when running on Windows to try to find the Python interpreter when
python is run as a CGI script.
There is a setting in the configuration file that controls whether to use
the shebang line or to reference the windows registry. The setting is
ScriptInterpreterSource registry
-jdc
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Alan Gauld
Sent: Thursday, April 05, 2007 4:28 AM
To: tutor@python.org
Subject: Re: [Tutor] windows and python and shebangs, oh my!
"Kirk Bailey" <[EMAIL PROTECTED]> wrote
> OK, in a script, we include a special statement telling the shell
> where to go find the interpeter. This is the first line of the script,
> and is a dpecial sort of comment, called informally the shebang.
Yes, but it is not a Python feature it is a Unix thing.
When you execute a script (of any kind) in Unix the Unix
shell(*) reads the first line and if its a shebang transfers control to the
appropriate interpreter.
(*) And not all Unix shells adhere to the convention, but thankfully the
vast majority do. The SVR4 Bourne shell didn't as I recall.
> In windows, this is for the current edition C:\python25\pythonw.exe so
> the shebang is #!C:\python\pythonw.exe
This is often done purely as a convention that shows what version of Python
the script was created for.
Python does nothing with it, it is only a comment.
> At a loss, it then occurred to me that the program is a .py name
> extension. When the auto installer installed python it may have
> created an association between that name extension and the correct
> interpreter automatically,
Correct, or you can do it manually. tHat is the only way that Windows
associates files with commands.
> So work with me, windows Pythonistas. CAN I rely on windows definitely
> and reliably having .py files associated with the windows python
> interpreter,
No, the association can be changed by any user or install script.
But in practice it rarely is changed so you can habe a good chance of
success.
If you really want to be sure the associations are stored in the registry.
You can look them up and change them (or add a missing one) as you need.
> If so, my task of designing the autoinstaller script just got a LOT
> simpler.
On Windows the answer is usually in the registry somewhere, you just need to
figure out where to look!
Alan G.
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