Flatten a Nested List

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Your question is Flatten a Nested List. Start with the requirements on the right.

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Problem

How would you implement a function to flatten a nested list?

Implement def flatten_nested_list(nested):, where nested contains integers and lists nested to arbitrary depth. Return a single list containing all integers in their original left-to-right order, including repeated values and ignoring empty lists.

Constraints

The input is a list containing integers or other lists.
Nesting depth may be arbitrary.
The total number of integers and list elements is at most 1000.
Integer values are between -10^9 and 10^9.
The relative order of all integer values must be preserved.

Function Signature

def flatten_nested_list(nested):

Your solutionPython 3

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