Encountered a TypeError while attempting to calculate the power of a 'NoneType' and an 'int'

I tried implementing this code in Python 2.7 to generate a new number:

def Algorithm(num):
    num = ((num**2) - 1)/4
    return num    

However, it resulted in the following error message:

TypeError: unsupported operand type(s) for ** or pow(): 'NoneType' and 'int'

Any assistance on resolving this issue would be highly appreciated! Thank you!

Answer №1

When you invoke this function, it seems that None is being passed in, resulting in the following outcome:

Alg(None)

Consequently, the value of n within the function becomes None, triggering an error. Essentially, the issue lies not with the function itself, but rather with how you're calling it.

Furthermore, a cautionary note - if you are dividing integers, it's advisable to ensure that at least one of the operands is a float to avoid potential loss of precision:

def Alg(n):               # no need to redefine n
    return ((n**2)-1)/4.0 # take note of the .0 for decimal point accuracy

Answer №2

Although your code is functioning correctly for me, you also have the option to utilize the pow function from the math module as an alternative.

import math as m
def Algorithm(num):
    num = (m.pow(num, 2) -1) / 4
    return num 
print(Algorithm(3))

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