Variable Declaration in Python

Used to declare a variable which holds a value.

variable_name = value
variable_name = None #to initialize without a value


Variables in Python are dynamically typed, which means a type does not have to be specified, and the variable's type can be changed.

Variable scoping in Python follows the LEGB rule, which is Local (assigned within a function), Enclosing function local (name in local scope of all enclosing functions), Global (available in the entire file), and Built-In (built into the Python library).

length = 5

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