[docs] [issue25299] TypeError: __init__() takes at least 4 arguments (4 given)

[R. David Murray]

R. David Murray added the comment:

Hmm.  After looking at the code, it may also be desirable to improve that error message at the argparse level, since there's a bit of not-immediately-obvious indirection going on there.

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<http://bugs.python.org/issue25299>
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