What is dict in python

What is dict in python?

dict is a variable data type in python, use { } means that the key of dict must be an immutable data type, while the data type of value can be arbitrary.

Format:

{key:value,key:value,key:value}

Note: If the key-value pair is a string, use single quotes, and the last key-value pair does not have a comma.

Advantages of dict:

①: Fast query speed, binary search possible

②: Key cannot be repeated

Note: 　

Immutable data types: tuple, bool, int, str can hash

Variable data types: dict, list, set

Related recommendations:《 Python Tutorial》

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