join list of lists python code example

Example 1: python join items in list

l = ['aaa', 'bbb', 'ccc']

s = ''.join(l)
print(s)
# aaabbbccc

s = ','.join(l)
print(s)
# aaa,bbb,ccc

s = '-'.join(l)
print(s)
# aaa-bbb-ccc

s = '\n'.join(l)
print(s)
# aaa
# bbb
# ccc

Example 2: python join list

''.join(list) # If you want to join with comma (,) then: ','.join(list)

Example 3: join lists python

first_list = ["1", "2"]
second_list = ["3", "4"]

# Multiple ways to do this:
first_list += second_list
first_list = first_list + second_list
first_list.extend(second_list)

Example 4: merge lists in list python

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

Example 5: python concatenate list of lists

x = [["a","b"], ["c"]]

result = sum(x, [])