Teaching Kids Programming – Turtle Graphics/Canvas Programming in Python

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The LOGO (Turtle Graphic) programming was popular in 1980s. And it has been ported to Python as a Library which we can do this:

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from turtle import *

from turtle import *

Then, we can send commands to the turtle to draw on the canvas. The turtle package requires the GUI to work though.

Instead of using the “REPEAT” command in LOGO, we use the Python for/while loop. For example, the following draws a star:

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for _ in range(5):
    fd(100)
    rt(144)

for _ in range(5):
    fd(100)
    rt(144)

The turtle graphs becomes even more powerful with the modern Python compiler. Similar to loops, the procedure definition aka “TO” keyword is no longer in need as we can directly define functions/procedures in Python.

The Turtle library is focusing on the interface between Turtle and the Canvas, and some commands are quite useful for example, the “undo()” command undos the last draw.

See all supported commands of Turtle Graphics in Python:
https://docs.python.org/3/library/turtle.html

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