is return a function in python code example

Example 1: specify return type python function

def greeting(name: str) -> str:
  return 'Hello, {}'.format(name)

Example 2: python return function

#the return function is used to return a value from a function
def double(number):
    return number * 2

Example 3: how to set the return value of a function in pytohn

def showPrompt(symbol :str, container :str) -> None:
    while container.lower() != "exit":
        container = str(input(symbol))