学ぶ Arbitrary Keyword Arguments (**kwargs) | Function Arguments in Details

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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.


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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:


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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")

1. What do you need to use to take a tuple of optional arguments?

2. What do you need to use to take a dict of keyword arguments?

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セクション 2. 章 4

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セクション 2. 章 4