python - 为什么此幂函数在负指数情况下返回零？

Question

对于所有负指数情况，该函数返回零:例如:print power(2, -3) 返回 0

def power(int1, int2):
   if int2 == 0:
       return 1

   result = int1

   for num in range(1, int2):
       result*=int1

   if int2 > 0:
       return result

   else:
       return (1/result)

Answer 1

正确用法:

def power(int1, int2):

    result = int1

    for num in range(1, abs(int2)): #Must be positive value!  use "abs()"
        result*=int1

    if int2 == 0:
        return 1

    elif int2 > 0:
        return result

    else:
        return (1/result)

print(power(2, -3)) #OUTPUT: 0.125