The code I posted below works accordingly to my expectations except for 1 problem. When it goes into the factorial route, after the number is determined as a prime number, ill see for example: 2! = 2none. The “none” here is the problem, but I have no idea where and what is causing that “none” to appear here. If there’s any suggestions or solutions, I would really appreciate it!

def getSum(number): 
    sum = 0
    for digit in str(number):  
      sum += int(digit)       
    return sum
def factorial():

if(number<0):

print("invalid input")

elif ((number==0) or (number==1)):

print(number,end="! = 1")

else:

factorial=1

for i in range(1, number+1):

factorial=factorial*i

print(number,end="! = "+ str(factorial))
number=int(input("enter number:")) #Q13

if(number==2):

print("A prime number")

print(factorial())

elif((number<2) or (number%2==0)):

print("not prime number")

print(getSum(number))

else:

for i in range (2, number):

if (number%i==0):

print("Not prime number")

print(getSum(number))

break

if (i==number-1):

print("A prime number")

print(factorial())