class User(object):
MALE = 0
FEMALE = 1
GENDERS = [(MALE, 'Male'), (FEMALE, 'Female')]
def __init__(self, gender):
self.gender = gender
def greet(self):
return {MALE: 'Hi, boy', FEMALE: 'Hi, girl.'}[self.gender]
alex = User(0)
print alex.greet()
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