Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:
What about arg_name and element_index?
>>> '{}'.format(123)
'123'
>>> '{0}'.format(123)
'123'
>>> '{0x0}'.format(123)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: '0x0'
>>> '{0_0}'.format(123)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: '0_0'
>>> '{0[0]}'.format([123])
'123'
>>> '{0[0x0]}'.format([123])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: list indices must be integers or slices, not str
>>> '{0[0_0]}'.format([123])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: list indices must be integers or slices, not str
----------
nosy: +serhiy.storchaka
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32720>
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