[SOLVED] Requiring help running an old Python script (non Python savvy user)

[buran]

You need to specify the csv file name when you run it or it will try to use the default filename from line 604.
That is why when you run it properly you get the ValueError on line 204

Error:
ValueError: invalid literal for int() with base 10: 'a'

Most likely your csv file is not in the format expected by the script. Note, it can be some very small difference, but it cause the error.

I guess you run it with different csv file from the one you posted here as sample. According to error traceback, you have a in the first column and in expects number (int). Check your file