I tried to code this into python: essentially it is a exponent calculator so for exp(2, 5) it should return 2⁵

def exp(num, pow):
    for i in range(0, pow, 1):
        num1=num*num
    print(num1)
print(exp(2, 5))

why won't it work?

I expected it to work but it always gives the square of the number.

CodePudding user response：

Each iteration of the loop just multiplies num by itself, once.

Sticking to your existing code as much as possible, you can modify your function to be like this:

def exp(num, pow):
        original_num = num

        for i in range(1,pow,1):
            num = num * original_num
        print(num)

CodePudding user response：

You should do num1=num1*num or num=num*num instead of num1=num*num.

If you do num1=num*num, the num1 will always contain the num^2 no matter how long the loop takes.

num1 = num
for i in range(1,n):
    num1=num1*num
return num1

or

for i in range(1,n):
    num=num*num
return num

CodePudding user response：

Exponential in python is calculated with (**). You can simply do this:

def exp(num, pow):
    return num**pow
print(exp(2, 5))

and this should return the value to the power