Operators and Methods for Dictionaries in Python
Dictionaries have some of the same operators and built-in functions that can be used with strings, lists, and tuples. For example, the
not in operators return
False according to whether the specified operand occurs as a key in the dictionary.
You can use the
in operator together with short-circuit evaluation to avoid raising an error when trying to access a key that is not in the dictionary. The
len() function returns the number of key-value pairs in a dictionary.
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