copy files from one destination to another by reading filename from csv

[Larz60+]

Not sure what you're trying to accomplish here:

    filename, "D:\maharera", "D:\maharera\copy" = argv[1:]

did you mean:

    filename = argv[1]

What does argv look like?
also, something has changed as line number and code don't match
this statement:

if __main__ == "__main__":

needs to be:

if __name__ == '__main__':