How do i flatten a nested list in python?

Flattening a nested list refers to converting it into a one-dimensional list. This can be achieved using list comprehensions in Python. Example:

nested_list = [[1, 2], [3, 4], [5, 6]]
flattened = [item for sublist in nested_list for item in sublist]

The above comprehension iterates through each sublist and then through each item in the sublist.