For the line
line.split()
What are you splitting on? Looks like a CSV, so try
line.split(',')
Example:
"one,two,three".split() # returns one element ["one,two,three"]
"one,two,three".split(',') # returns three elements ["one", "two", "three"]
As @TigerhawkT3 mentions, it would be better to use the CSV module. Incredibly quick and easy method available here.