'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
# your code goes here
# your code goes here
# your code goes here
# your code goes here
# your code goes here
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