concatenate list items 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 concatenate list of lists

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

result = sum(x, [])