Question

How to merge multiple lists into one list in Python

Answer 1

l1 = ["python", "java"]
l2 = ["c#"]
l3 = ["c", "c++", "php"]

a_list = l1 + l2 + l3

print(a_list)


'''
run:

['python', 'java', 'c#', 'c', 'c++', 'php']

'''

 

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Answer 2

import itertools

l1 = ["python", "java"]
l2 = ["c#"]
l3 = ["c", "c++", "php"]

it = itertools.chain(l1, l2, l3)
a_list = list(it)

print(a_list)


'''
run:

['python', 'java', 'c#', 'c', 'c++', 'php']

'''

 

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