Python - Read comma separated values from a text file, then output result to text file [closed]

Answer 1

For this task you may want to not work with files in your program directly, but work with standard input (input() or raw_input() in Python 2) and standard output (just print()).

Then you specify input and output file names during invocation of your script:

python script.py < file.txt > answer.txt

With this scheme you can have a program like this (Python 2.7):

while (True):
    try:
        x, y, z = [int(val) for val in raw_input().split(',')]
        print (x + y + z)
    except EOFError:
        pass