List with duplicated values and suffix

Question

I have a list, a:

a = [\'a\',\'b\',\'c\']

and need to duplicate some values with the suffix _ind added this way (

Answer 1

It can be shortened a little bit by moving the options to the inner for loop in the list comprehension:

a = ['a','b','c']

[item for x in a for item in (x, x + '_ind')]
# ['a', 'a_ind', 'b', 'b_ind', 'c', 'c_ind']