Use of function/return

[Yoriz]

Here is an example of using a function

def a_function(function_input):
    local_variable = "Local Variable"
    return f"{function_input} + {local_variable}"


returned_from_function = a_function("Function Input")

print(returned_from_function)

Output:
Function Input + Local Variable

---

The code doesn't need to be changed much to turn it into a function

numbers = [1, 5, 3, 2]
print(numbers)


def get_odd_numbers(numbers):
    odd_numbers = []
    for number in numbers:
        if number % 2:
            odd_numbers.append(number)
    return odd_numbers


odd_numbers = get_odd_numbers(numbers)
print(odd_numbers)
print(sum(odd_numbers))

Output:
[1, 5, 3, 2]
[1, 5, 3]
9

---

It can also be written as the more compact

def get_odd_numbers(numbers):
    return [number for number in numbers if number % 2]