Python launcher problem

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From	ElChino <elchino@cnn.cn>
Newsgroups	comp.lang.python
Subject	Python launcher problem
Date	Thu, 30 Jul 2015 09:03:14 +0200
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If I in a cmd-shell (actually it is 4NT), do:
   c:>py -3 -V & python3 -V

I get:
   Requested Python version (3) not installed  << ! from py -3 -V
   Python 3.5.0b2   << ! from the 2nd cmd.

What nonsense is this? I DO HAVE Python3 in my %PATH.
A Registry setting gone haywire?

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Thread

Python launcher problem ElChino <elchino@cnn.cn> - 2015-07-30 09:03 +0200
  Re: Python launcher problem Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-07-30 09:39 +0200
  Re: Python launcher problem Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-07-30 10:01 +0100
  Re: Python launcher problem Terry Reedy <tjreedy@udel.edu> - 2015-07-30 05:41 -0400
    Re: Python launcher problem wxjmfauth@gmail.com - 2015-07-30 08:05 -0700
  Re: Python launcher problem ElChino <elchino@cnn.cn> - 2015-07-31 18:30 +0200

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