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Guido van Rossum 1993-12-17 14:23:52 +00:00
parent 3cbc16d904
commit 7565b93414
8 changed files with 51 additions and 49 deletions
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11
Demo/classes/Rat.py
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@ -2,7 +2,7 @@
def rat(num, den):
return Rat().init(num, den)
return Rat(num, den)
def gcd(a, b):
@ -13,13 +13,12 @@ def gcd(a, b):
class Rat:
def init(self, num, den):
def __init__(self, num, den):
if den == 0:
raise ZeroDivisionError, 'rat(x, 0)'
g = gcd(num, den)
self.num = num/g
self.den = den/g
return self
def __repr__(self):
return 'rat' + `self.num, self.den`
@ -49,8 +48,10 @@ class Rat:
return a, rat(b, 1L)
if t == type(0.0):
return a.__float__(), b
if t == type(a) and a.__class__ == b.__class__:
return a, b
raise TypeError, 'Rat.__coerce__: bad other arg'
def __add__(a, b):
if type(b) <> type(a):
a, b = a.__coerce__(b)
@ -93,4 +94,4 @@ def test():
except ZeroDivisionError:
print 'OK'
#test()
test()