Dictionary In Python

In Python, a dictionary is a built-in data structure that allows you to store key-value pairs. It is also sometimes referred to as a "hash map" or "associative array" in other programming languages.

To create a dictionary in Python, you can use curly braces {} or the built-in dict() function.

dict: A built-in function that returns a new dictionary object.
key: The first element of a key-value pair in a dictionary. It is used to access the corresponding value.
value: The second element of a key-value pair in a dictionary. It is the data associated with a particular key.
items: A method of the dictionary class that returns a list of all the key-value pairs as tuples.
keys: A method of the dictionary class that returns a list of all the keys in the dictionary.
values: A method of the dictionary class that returns a list of all the values in the dictionary.
len: A built-in function that returns the number of items in a dictionary.
get: A method of the dictionary class that returns the value associated with a key, or a default value if the key is not found.
pop: A method of the dictionary class that removes and returns the value associated with a key, or a default value if the key is not found.
update: A method of the dictionary class that adds or updates key-value pairs from another dictionary or an iterable of key-value pairs.
in: A membership operator that checks if a key is present in a dictionary.
clear: A method of the dictionary class that removes all the items from the dictionary.

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