Function

A grouping of programming instructions under a single name

Functions

Programmers can use functions created by their partners, relying on the functionality without needing to know the specific details of how the function is implemented.

Functions

Should be clearly named to help other people better understand programs

Functions

Can standalone, or take parameters

t.right(180)

t.xcor()

Abstraction

A simplified representation of something more complex.

Abstractions

Allow you to hide details to help you manage complexity, focus on relevant concepts, and reason about problems at a higher level.

ctrl + /

Do Now

Go to repl.it ➝ my repls
Create new Python Turtle repl (click red + at bottom right)
Copy & paste your code from Keyboard Control 1

import turtle

player1 = turtle.Turtle()

world = turtle.Screen()
world.bgcolor("black")
world.listen()
player1.penup()
player1.color("red")
player1.shape("turtle")

def moveUp():
  player1.sety(player1.ycor() +20)
def moveDown():
  player1.sety(player1.ycor() -20)
def moveLeft():
  player1.setx(player1.xcor() -20)
def moveRight():
  player1.setx(player1.xcor() +20)
 
 
world.onkey(moveUp, "Up")
world.onkey(moveDown, "Down")
world.onkey(moveLeft, "Left")
world.onkey(moveRight, "Right")

you'll need this for classwork today, so copy this if you don't have it