The nonlocal keyword in python

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sure! the `nonlocal` keyword in python is used to declare that a variable inside a nested function is not local to that function, but is defined in the nearest enclosing scope that is not the global scope. this allows you to modify a variable from an outer (but non-global) scope within a nested function.

here is an example to demonstrate the use of the `nonlocal` keyword:



in this example:
we have an `outer_function` that defines a variable `x` with the value of 10.
inside `outer_function`, we have an `inner_function` that uses the `nonlocal` keyword to indicate that `x` is not local to `inner_function`.
the `inner_function` modifies the value of `x` to 20 and prints it.
after calling `inner_function`, when we print the value of `x` in the `outer_function`, it reflects the change made by the `inner_function`.

output:


as you can see, by using the `nonlocal` keyword, we were able to modify the variable `x` defined in the outer function from within the inner function. this can be useful in scenarios where you need to update variables in an outer scope from within a nested function.

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