using virtualenv in windows service,cannot find the correct python.exe path

[stevendai]

PYTHON 2.7

using virtualenv in windows service,cannot find the correct python.exe path,
in multiprocessing/forking.py file there is code(line 217):
if WINSERVICE:
_python_exe = os.path.join(sys.exec_prefix, 'python.exe')
this path not find python.exe ,because in virtualenv the python.exe file is at
os.path.join(sys.exec_prefix, 'Scripts','python.exe')

[pnasrat]

This strikes me as more likely an issue with multiprocessing/forking.py @pfmoore any opinions on the right way to get the path to the python.exe

[pfmoore]

Agreed. This is a bug in multiprocessing/forking.py. Note that the docs for sys.exec_prefix don't say that python.exe is always located in that directory (and that's what isn't true for a virtualenv).

Actually, as Python doesn't come with a pythonservice.exe (that's in pywin32) this is the standard library trying to support running via a 3rd party package (and getting it wrong when a virtualenv is involved). It's hard to know how best to address this. But it's not our problem (as a data point, a Python 3.3 venv would have the same issue).

You could look for sys.prefix/python.exe and sys.prefix/Scripts/python.exe and use whichever exists. That's a bit of a hack, but it's the best I can suggest without knowing more about how pywin32 works.

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