Trying to call the gcd from the constructor but I keep getting either a global error or gcd is not defined error. Any suggestions? The program is supposed to reduce fractions immediately. So I got rid of the add.

```
class Fraction:
def __init__(self,m,n):
self.num = m
self.den = n
gcd()
def __str__(self):
return str(self.num)+"/"+str(self.den)
def show(self):
print self.num,"/",self.den
#Assume that m and n are greater than zero
def gcd(m,n):
while m%n != 0:
oldm = m
oldn = n
m = oldn
n = oldm%oldn
return n
"""def __add__(self,otherfraction):
newnum = self.num*otherfraction.den + \
self.den*otherfraction.num
newden = self.den * otherfraction.den
common = gcd(newnum,newden)
return Fraction(newnum/common,newden/common)"""
def __cmp__(self,otherfraction):
num1 = self.num*otherfraction.den
num2 = self.den*otherfraction.num
if num1 < num2:
return -1
else:
if num1 == num2:
return 0
else:
return 1
```