PAI Session 6 (7/22 batch)

1. Python with AI –
Turtle

2. Turtle module
• Turtle is a library that helps you make graphics

3. Turtle module
• Turtle is a library that helps you make graphics
• One of the first robots designed had a turtle shape and a pen
attached to it, which is where the name comes from
• If using repl, choose language that allows
import of turtle

4. Turtle module
• Import the module

5. Turtle module
• Import the module
• Create a turtle object

6. Popular methods in turtle
• forward(x): moves the pen in the forward direction by x unit.
• backward(x): moves the pen in the backward direction by x unit.
• right(x): rotate the pen in the clockwise direction by an angle x.
• left(x): rotate the pen in the anticlockwise direction by an angle x.
• setheading(x): Set the angle at which it is headed
• penup(): stop drawing of the turtle pen.
• pendown(): start drawing of the turtle pen.
• circle(x): draw a circle of radius x

7. How do you find current turtle state
• pos() – Find the current position of the turtle
• towards(x,y) – Angle between turtle and a given location
• xcor() – turtles x-coordinate
• ycor() – turtles y-corodinate
• heading(x) – turtles angle
• distance(x,y) – turtles distance from a given location

8. Events
• Anything you can do with your keyboard or mouse is an event
• You can bind your entire screen to listen
• turtle.listen() makes sure it continuously listens for events

9. Events
• Anything you can do with your keyboard or mouse is an event
• turtle.listen() makes sure it continuously listens for events
• turtle.onkey(function, key) binds a key with an action

10. Example – golf
• Create a circle at a random location, bring turtle back to (0,0)
• Ask user to input an angle and distance
• Move the turtle at the provided angle and distance
• When the turtle is close enough to the circle, game over
• Score is given by how many tries you took

11. Example – golf
• Create a circle at a random location, bring turtle back to (0,0)
• Ask user to input an angle and distance
• Move the turtle at the provided angle and distance
• When the turtle is close enough to the circle, game over
• Score is given by how many tries you took
• Repl link: https://repl.it/@AIClubAcademy/turtleGame#main.py

12. http://aiclub.world