list concatenation in python code example

Example 1: how to combine two lists in python

listone = [1,2,3]
listtwo = [4,5,6]

joinedlist = listone + listtwo

Example 2: concatenate list of strings python

listvalues = ['a', 'b', 'c']
concstring = ''.join(l)

Example 3: merge lists in list python

import itertools
a = [['a','b'], ['c']]
print(list(itertools.chain.from_iterable(a)))