line 8 and 14 indent is incorrect
change line 13 to:
on second look:
remove lines 13 and 14 entirely
change line 11 to:
and move lines 16 & 17 outside of while loop
change line 13 to:
if add_group_name.strip() == 'quit':
on second look:
remove lines 13 and 14 entirely
change line 11 to:
while add_group_name.strip() != 'quit':
and move lines 16 & 17 outside of while loop