/Python/How to flatten list of lists in python

How to flatten list of lists in python

# if your list is like this
l = [['Adela', 'Fleda', 'Owen', 'May', 'Mona', 'Gilbert', 'Ford'], 'Adela']

# then you 
a = []
for i in l:
    if type(i) != str:
        for x in i:
            a.append(x)
    else:
        a.append(i)

Python flat list from list of list

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

#which is equivalent to this 
flat_list = []
for sublist in l:
    for item in sublist:
        flat_list.append(item)

Source: stackoverflow.com

Flatten a list of lists python

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

Source: stackoverflow.com

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]

Python flatten list

itertools.chain.from_iterable(factors)

Python flatten list

l = [[1, 2], [3, 4], [5, 6, 7]]
flat_list = [item for sublist in l for item in sublist]
# flat_list = [1, 2, 3, 4, 5, 6, 7]

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