How to make the function to prompt the user repeatedly till he enters a no

[sbabu]

def ck_no(prompt):
    while True:
        try:
            
            lst = (2,3,4)
            if prompt not in lst:
                print("not in list")
                raise ValueError
            else:
                print("In the List")
        except ValueError as e:
            print(e)
            return
            
ck_no(int(input(print("Enter a No: "))))

Output:
Enter a No: 
None

After calling the function it prompts the user to enter the no. But it prints none. Beside none if enter the no it accepts and the pgm continues. How to correct this none.

I want to prompt the user again and again to enter different nos. How to do this?

Thanks