[issue29014] Python 3.5.2 installer doesn't register IDLE .py extensions on Windows 10

[Terry J. Reedy]

Terry J. Reedy added the comment:

Here is another possible reason (and cure) for intentionally installed  python to not work.  Just posted to Python list.

"Turns out that another instance of Python *was* installed, not as part of OEM software, but by a digital camera (Califone) that is being used in some of our classrooms.  The suggestion to look for environmental variables was the key  -  on the PCs where we were having the problem, there was a variable starting with PYTHON ... which pointed to the camera software.  Once the camera was uninstalled, Python 3.5.2 worked just fine."

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29014>
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