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Mastering Python: Annotations, Errors and Environment
Mastering Python: Annotations, Errors and Environment
Arbitrary Keyword Arguments (**kwargs)
Arbitrary Keyword Arguments (**kwargs
) are arbitrary arguments with name. Syntax of the keyword argument (keyword=argument
). The **kwargs
syntax allows us to pass a different number of named arguments.
def some_function(**kwargs): print(type(kwargs)) print(kwargs) some_function(first=11, second=22, some=33)
In the example above, we pass the named arguments (first=11
and other) to the some_function()
.
The taken kwargs
is a dict
(dictionary) where:
- keys are taken keywords in the
str
type. - values are values of these keywords.
key (keyword) | value |
first | 11 |
second | 22 |
some | 33 |
The operations with keywords are regular dict
operations. You can use the keys()
dictionary method to get all taken keywords and use the items()
to get the key-value pairs:
def user_info(**kwargs): print("Taken info:", kwargs.keys()) for key, value in kwargs.items(): print(key + ":", value) user_info(name="John", surname="Smith", age="16", username="josmith16")
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