str.format_map()

str.format_map(mapping)

Similar to str.format(**mapping), except that mapping is used directly and not copied to a dict. This is useful if for example mapping is a dict subclass:

>>> class Default(dict):
...     def __missing__(self, key):
...         return key
...
>>> '{name} was born in {country}'.format_map(Default(name='Guido'))
'Guido was born in country'

New in version 3.2.

Links:

https://docs.python.org/3.5/library/stdtypes.html#str.format_map

doc_python

2016-10-07 17:43:09

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