class Fraction:
def __init__(self,numer,deno):
self.numer = numer
self.deno = deno
def print(self):
print(self.numer,end="/")
print(self.deno,end="")
print()
def add(self,b):
o = (self.numer*b.deno)+(b.numer*self.deno)
u = (self.deno*b.deno)
add = Fraction(o,u)
return add
def setup():
a = Fraction(5,3)
b = Fraction(2,-1)
c = a.add(b)
a.print()
b.print()
c.print()
assert c.numer == 1 and c.deno == -3
setup()
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