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Thu Sep 20 17:14:57 CEST 2012 · https://mail.python.org/pipermail/python-dev/2012-September/121768.html

2012/9/20 Mark Dickinson <dickinsm at gmail.com>:
> And excepting optional ones, too, right?  E.g., the c in
>
>     def foo(a, b, c=1, *args, d):
>         pass
>
> can be passed to by position, but isn't "positional".

Why not?

>>> def f(a, b, c=3): pass
...
>>> f()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: f() missing 2 required positional arguments: 'a' and 'b'
>>> f(1, 2, 3, 4)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: f() takes from 2 to 3 positional arguments but 4 were given

-- 
Regards,
Benjamin

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[Python-Dev] TypeError: f() missing 1 required positional argument: 'x'