'a test module'
__author__='Michael Liao'

import sys 

def test():
	args=sys.argv
	if len(args)==1:
		print('Hello World')
	elif len(args)==2:
		print('Hello,%s!'% args[1])
	else:
		print('too many arguments')
if __name__=='__main__':
	test()
# your code goes here
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