basic template of python script from 'How to Write "Pythonic" Code'

python_basic_script.py

#!/usr/bin/env python

# examples/script-template.py

def main(args):
    if not args:
        print "Usage: foo ARG1 [ARG2...]"
        return 2
    return 0

if __name__ == '__main__':
    import sys
    status = main(sys.argv[1:])
    sys.exit(status)
    # or combined
    # sys.exit(main(sys.argv[1:]))