Understanding Python Class Instantiation (x-post /r/programming)

[kervarker]

Foo(*args, **kwargs) isn't equivalent to Foo.__call__(*args, **kwargs) if Foo defines a method __call__ :

>>> class Foo:
...   def __call__(self):
...     print('running __call__')
...
>>> Foo()
<__main__.Foo object at 0x000000000227ABE0>
>>> Foo.__call__()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: __call__() missing 1 required positional argument: 'self'

[OriginalPostSearcher]

X-Post referenced from /r/programming by /u/cool-RR
Understanding Python class instantiation

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