"cannot execute binary file" error in python

I keep getting the following error: ``` $ ./test.py -bash: ./test.py: cannot execute binary file ``` when trying to run the following file in python via cygwin: ``` #!usr/bin/python with open("input.txt") as inf: try: while True: latin = inf.next().strip() gloss = inf.next().strip() trans = inf.next().strip() process(latin, gloss, trans) inf.next() # skip blank line except StopIteration: # reached end of file pass from itertools import chain def chunk(s): """Split a string on whitespace or hyphens""" return chain(*(c.split("-") for c in s.split())) def process(latin, gloss, trans): chunks = zip(chunk(latin), chunk(gloss)) ``` How do I fix this?? After taking on the below suggestions, still getting the same error. If this helps, I tried ``` $ python ./test.py ``` and got ``` $ python ./test.py File "./test.py", line 1 SyntaxError: Non-ASCII character '\xff' in file ./test.py on line 1, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details ```