Firstly there are 2 keywords you need to know here.
The next lesson in the roadmap will look at functions. This lesson looks at procedures.
<aside> 💡 Think of a procedure as a pre-set sequence of code that can be carried out when needed.
<aside> 🎮 You use them all the time when using a mobile phone or playing a game on a console. eg. when you click on the move button to move left or right

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Look at this example of a simple procedure below in Python.
def greeting():
print("hello")

To call (or in other words to use) a function, type the name with parenthesis. In the example below greeting one is called. Try to change the code on line 7 to call greeting2 instead.
https://replit.com/@bitFez/functionexample1
Sometimes we need to give a procedure or a function some data so that it can make use of it. An easy example of how this would work is a number machine
in the example below, the number machine takes a number (an argument) and outputs a result.

def numberMachine(givenNumber):
calculation = givenNumber * 10 / 2
print(calculation)
