Reading and writing to files

import os.path

input_path = './input'

output_path = './output'

fname = 'filename'

fname_in = os.path.join(input_path,fname)

try:

    with open(fname, 'r') as f:

        lines = f.readlines()

        # automatically closes

except IOError:

    # exception handling a this point

    raise

for i,v in enumerate(lines):

    # do parsing stuff

    v = v.strip()  # remove trailing whitespace

    v = [k,strip() for k in v.strip(),split(',')] # split into an array based on commas