Python flatten list

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]

Flatten list python

def flatten(L):
    for item in L:
        try:
            yield from flatten(item)
        except TypeError:
            yield item

list(flatten([[[1, 2, 3], [4, 5]], 6]))
>>>[1, 2, 3, 4, 5, 6]

Source: stackoverflow.com

Similar codes

0 vote108 views2 answers
Flask heroku
Python
4 votes113 views2 answers
Weekday pandas
Python
1 vote108 views2 answers
Pygame left click
Python
0 vote126 views1 answer
Migrate using other database django
Python Django
0 vote105 views1 answer
Onetomany field
Python
0 vote100 views2 answers
NameError: name 'request' is not defined
Python
2 votes110 views2 answers
Time difference between two datetime.time
Python
14 votes109 views3 answers
How to find highest number in list without using max function python
Python
0 vote109 views1 answer
How to get foregine key field from models
Python
1 vote97 views2 answers
Django template iterate dict
Python