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import sys

#first line of a function with 3 " and ends with 3 " constitute DocString for help(module.function)

#to import this function in this module, import runtime_check, dir(runtime_check),help(runtime_check.repeat)

def repeat(s,exclaim):

"""Repeats the string optionally with exclamation appended

"""

result = s + s + s

if exclaim:

result = result + '!!!'

return result

def main():

name = sys.argv[1]

if name == 'Guido':

print repeet(name) + '!!!!' # no compile time check for undefined Function name, only runtime

else:

print repeat(name,False)

if __name__ == '__main__':

main()