> On unix you would start the file with a "hashbang" e.g. > > #!/usr/bin/python3 > > Fraid I don't know if that works on XP though. > > Roger.
It does not; Windows associates applications with file extensions. However, I have used something like this to get something like the Unix shebang behavior: @echo off rem = """ ver26.bat: Python 2.6 C:\Python26\python -x %~f0 %* goto END rem """ # ver26.py wrapped in ver26.bat to mimic Unix #! behavior import sys print sys.version rem = """ :END pause rem """ @echo off rem = """ ver31.bat: Python 3.1 D:\Python31\python -x %~f0 %* goto END rem """ # ver31.py wrapped in ver31.bat to mimic Unix #! behavior import sys print(sys.version) rem = """ :END pause rem """ I cannot remember where I first saw this, and don't think I have ever seen it since. It seems like a bit of a hack, but I use it from time to time when I cannot rely on Windows file associations. Perl has a much cleaner way to accomplish the same thing for Windows (see the pl2bat.bat script that ships with Perl Windows distributions). Mike -- http://mail.python.org/mailman/listinfo/python-list