flatten nested list python code example

Example 1: flatten list of lists python

flat_list = [item for sublist in t for item in sublist]

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]

Example 3: flatten a list of lists python

flattened = [val for sublist in list_of_lists for val in sublist]

Example 4: python unlist flatten nested lists

import collections.abc

def flatten(x):
    if isinstance(x, collections.Iterable): # or isinstance(x,list)
        return [a for i in x for a in flatten(i)]
    else:
        return [x]

Example 5: flatten lists python

flat_list = []
for sublist in l:
    for item in sublist:
        flat_list.append(item)