unlist a list in python code example
Example 1: python how to unnest a nested list
# Basic syntax:
unnested_list = list(chain(*nested_list))
# Where chain comes from the itertools package and is useful for
# unnesting any iterables
# Example usage:
from itertools import chain
nested_list = [[1,2], [3,4]]
my_unnested_list = list(chain(*nested_list))
print(my_unnested_list)
--> [1, 2, 3, 4]
Example 2: flatten a list of list python
# idiomatic python
# using itertools
import itertools
list_of_list = [[1, 2, 3], [4, 5], [6]]
chain = itertools.chain(*images)
flattened_list = list(chain)
# [1, 2, 3, 4, 5, 6]