[issue28210] argparse with subcommands difference in python 2.7 / 3.5

[stephan]

stephan added the comment:

I am not an expert with argparse since I just started using it
(and it has quite a lot of features which are 
not all self-explaining to me).

But if I didn't misunderstand something it should behave like the python 2.7 version:
 If I do not pass any command I am told that I missed the parameter.

Or: 
 - are there some parameters I missed to make them behave equally?
 - what is the intention to fail silently?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28210>
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