[issue38262] Mixins - super calls in bases of multiple-inheritance with different parameters

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

> The oddity I came around is the simple case of mixins with 
> different parameters, where both are derived from 'object'.
>  It is obvious, that such a class has to comply to the parents 
> call interface - here object - when to be used standalone. BUT when 
> I ignore this and set intentionally a parameter - for test-purposes 
> of mixins only - the resolution algorithm seems to normalize both for the
>  final call without parameters -  as soon as one of the mixins is a
> non-parameter call. This is independent from the inheritance order
> for the derived class.

Sorry, this isn't a bug.  In may be inconvenient but it is intrinsic to how cooperative multiple inheritance works.  

FWIW, the techniques for managing parameter passing are covered in this blog post:  https://rhettinger.wordpress.com/2011/05/26/super-considered-super/

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nosy: +rhettinger
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38262>
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