can anyone help me on Practice Creating and Using Functions in Python activity THATS ODD . stuck ...

To define this function, we start off with def. This tells the interpreter shows that you are going to define a function. "is_odd" is the name of this function, so well put that afterwards, with a pair of parenthesis : is_odd()

Inside the parenthesis, we specify the parameter that we are going to test. In this case, it can be any number so we use a varaible. It can be any variable and in this case, I'll use the variable 'num'. We finish off with a full colon (:) to show that we are now going to define the functionis_odd(num).

def is_odd (num):

Now we want to test if the number in num is odd. How do we do that? We divide it by 2. If we get a remainder, it is odd. If we don't, it is even. To find the remainder when you divide two numbers in python, we use the %. This is called a modulo operator. a%b is the remainder when we divide a by b.

def is_odd(num):
    num%2 

We can check if this reminder is actually 1 using an if statement: If the remainder is 1, then the number is odd.In this case we will print the string "Number is odd".

def is_odd(num):
    if num%2 == 1:
        print('Number is odd')

If it is not odd, we will print "Number is not odd"

def is_odd(num):
    if num%2 == 1:
        print('Number is odd')
    else:
        print('Number is not odd')

Note that the we use else here, as the remainder when divided by 2 can only be 1 or 0. So the else does the exact same thing as if num%2 == 0. However, it is much shorter so we can just use else instead.

You can then call this function for any value for num by just doing is_odd(3) for example which will print "Number is odd". Doing is_odd(4) for example will cause "Number is not odd" to be printed.