Python list index out of range on return value of split

Question

I\'m writing a simple script that is trying to extract the first element from the second column of a .txt input file.

import sys

if (len(sys.argv) > 1):         


        

Answer 1

you probably have empty line(s) after your data, I ran your test code without them it worked as expected.

$ python t.py t.txt
file opened
389182.567
389182.590
389182.611
389182.631
389182.654

if you don't want to remove them, then simply check for empty lines.

for line in f:
    if line.strip(): # strip will remove all leading and trailing whitespace such as '\n' or ' ' by default    
        line = line.strip("\n ' '")
        line = line.split(",") 
        print line[1]