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@mengwong
Last active June 12, 2020 14:44
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tax Credit A and B, Python
#!/opt/local/bin/python
# https://twitter.com/mengwong/status/1271434036976603136
from abc import ABC, abstractmethod
class Person:
def __init__(self, children=[]):
self.children = children
class TaxCredit(ABC):
@abstractmethod
def rate(self, person):
pass
class TaxCreditB:
def rate(self, person):
return 100
class TaxCreditA(TaxCreditB):
def rate(self, person):
return super().rate(person) / 2 if len(person.children) == 2 else super().rate(person)
alice = Person()
bob = Person()
carol = Person(children = [alice, bob])
taxcB = TaxCreditB()
print ("tax credit B: alice:", taxcB.rate(alice))
print ("tax credit B: bob:", taxcB.rate(bob))
print ("tax credit B: carol:", taxcB.rate(carol))
taxcA = TaxCreditA()
print ("tax credit A: alice:", taxcA.rate(alice))
print ("tax credit A: bob:", taxcA.rate(bob))
print ("tax credit A: carol:", taxcA.rate(carol))
# 20200612-21:47:23 mengwong@venice4:~/tmp/python/taxc% python taxc.py
# tax credit B: alice: 100
# tax credit B: bob: 100
# tax credit B: carol: 100
# tax credit A: alice: 100
# tax credit A: bob: 100
# tax credit A: carol: 50.0
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