Example of using optparse to work with command line arguments to build a *nix style CLI tool

cli_test.py

import optparse

def main():
	p = optparse.OptionParser()
	p.add_option('--person', '-p', default="world")
	options, arguments = p.parse_args()
	print 'Hello %s' % options.person

if __name__ == '__main__':
	main()