/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]

Similar codes

0 vote322 views1 answer
How to make print float value without scientific notation in dataframe in jupyter notebook
Python
13 votes268 views2 answers
How to append to text file with new line by line in python
Python
0 vote265 views1 answer
Find the median of input number in a list and print
Python
0 vote281 views1 answer
Student notebook (finish), INB (finish), Food and Fitness log (log necessary), debate speech (finish)
Python
38 votes276 views3 answers
Pil python install
Python
51 votes279 views5 answers
Mr robot
Python
0 vote382 views1 answer
Bash: line 1: templates/addtask.html: No such file or directory in flask app
Python Flask
7 votes275 views4 answers
Extract year from datetime pandas
Python
1 vote344 views1 answer
How to count post by category django
Python Django
0 vote324 views2 answers
Python convert ftp timestamp to datetime
Python