hello world code in Python

hello.py

#!/usr/bin/python

# Run with:
#   python hello.py cameron
#   python hello.py


# import modules used here -- sys is a very standard one
import sys

# Gather our code in a main() function
def main():

  print 'Number of arguments: ', len(sys.argv)
	
	if len(sys.argv)>1:
		print '\tHello there', sys.argv[1]
	else:
		print "\tHello world!"	

# Standard boilerplate to call the main() function to begin
# the program.
if __name__ == '__main__':
    main()