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# -*- coding: utf-8 -*
def greet(s):
if s is None:
print ('hello word')
else:
print 'hello'+s
greet()
greet('Bart')
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# -*- coding: utf-8 -*
def greet(s):
if s is None:
print ('hello word')
else:
print 'hello'+s
greet()
greet('Bart')
2018-12-26
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