我的代码如下：
class Fraction:
"""Class for performing fraction arithmetic.
Each Fraction has two attributes: a numerator, n and a deconominator, d.
Both must be integer and the deonominator cannot be zero."""
def __init__(self, n , d):
"""Performs error checking and standardises to ensure denominator is positive"""
if type(n)!=int or type(d)!=int:
raise TypeError("n and d must be integers")
if d==0:
raise ValueError("d must be positive")
elif d<0:
self.n = -n
self.d = -d
else:
self.n = n
self.d = d
def __str__(self):
"""Gives string representation of Fraction (so we can use print)"""
return(str(self.n) + "/" + str(self.d))
def __add__(self, otherFrac):
"""Produces new Fraction for the sum of two Fractions"""
newN = self.n*otherFrac.d + self.d*otherFrac.n
newD = self.d*otherFrac.d
newFrac = Fraction(newN, newD)
return(newFrac)
def __sub__(self, otherFrac):
"""Produces new Fraction for the difference between two Fractions"""
newN = self.n*otherFrac.d - self.d*otherFrac.n
newD = self.d*otherFrac.d
newFrac = Fraction(newN, newD)
return(newFrac)
def __mul__(self, otherFrac):
"""Produces new Fraction for the product of two Fractions"""
newN = self.n*otherFrac.n
newD = self.d*otherFrac.d
newFrac = Fraction(newN, newD)
return(newFrac)
def __truediv__(self, otherFrac):
"""Produces new Fraction for the quotient of two Fractions"""
newN = self.n*otherFrac.d
newD = self.d*otherFrac.n
newFrac = Fraction(newN, newD)
return(newFrac)
def __eq__(self, otherFrac):
return(self.n * otherFrac.d) == (self.d * otherFrac.n)
def gcd(self):
gcd = 1
if self.n % self.d == 0:
return self.d
for k in range(int(self.d / 2), 0, -1):
if self.n % k == 0 and self.d % k == 0:
gcd = k
break
return gcd
def simFrac(self):
newN = self.n / f.gcd()
newD = self.d / f.gcd()
newFrac = Fraction(newN, newD)
return (newFrac)
当我尝试运行simFrac（）的进度时，系统会出现错误。
这是我的测试：
f=Fraction(30,18)
f.gcd()
6 #The output of f.gcd()
我们尝试输入f.simFrac（）
出现错误，如下所示：
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
f.simFrac()
File "C:/Users/Kavan/Documents/Python/resit CE/Q4.py", line 67, in simFrac
newFrac = Fraction(newN, newD)
File "C:/Users/Kavan/Documents/Python/resit CE/Q4.py", line 9, in __init__
raise TypeError("n and d must be integers")
TypeError: n and d must be integers
我知道函数中的整数有一个错误（simFrac），但我不知道如何解决它，有人能告诉我该怎么做吗？