#Python
In Python, a dictionary is a collection of key-value pairs, where each key is unique and maps to a value. Dictionaries are unordered and mutable, meaning they can be changed after creation. They are enclosed in curly braces {} and use the colon : to separate keys from their corresponding values.
Key Characteristics:
Key-Value Pairs:
Dictionaries store data in the form of key:value pairs.
Unordered:
The order of elements in a dictionary is not guaranteed and may not be the same as the order they were added.
Mutable:
Dictionaries can be modified by adding, removing, or updating key-value pairs after they are created.
Unique Keys:
Each key in a dictionary must be unique. If you try to add a duplicate key, it will overwrite the existing value associated with that key.
Flexible Values:
Values in a dictionary can be of any data type, including other dictionaries.
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