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The website CodeHS uses a work area called a "Sandbox" so coders can explore and test code!
The website CodeHS uses a work area called a "Sandbox" so coders can explore and test code!
Python Turtle is a coding program to make graphics - designs, shapes, drawings, etc.
Python Turtle is a coding program to make graphics - designs, shapes, drawings, etc.
The code is used to move Turtle around. Everywhere Turtle moves, Turtle draws. If Turtle moves in a circle, then a circle will be drawn on the screen.
The code is used to move Turtle around. Everywhere Turtle moves, Turtle draws. If Turtle moves in a circle, then a circle will be drawn on the screen.
Turtle can draw in many different colors, and the lines Turtle draws can be different sizes.
Turtle can draw in many different colors, and the lines Turtle draws can be different sizes.
If you click on the "Docs" tab, it will give you examples of lines of code you can use for your creation.
If you click on the "Docs" tab, it will give you examples of lines of code you can use for your creation.
For instance,
For instance,
forward(200) tells the 'turtle' (Tracy) to move forward across the screen by 200 pixels. Pixels are a measurement for points on the screen.
forward(200) tells the 'turtle' (Tracy) to move forward across the screen by 200 pixels. Pixels are a measurement for points on the screen.
Tracy the Turtle always starts in the center. which is 0. To move you can use the "forward" or the "backward" code commands, and you can also use 'opposites' by using negative numbers. example: the command forward (-100) will actually go backward, and backward(-50) will actually go forward!
Tracy the Turtle always starts in the center. which is 0. To move you can use the "forward" or the "backward" code commands, and you can also use 'opposites' by using negative numbers. example: the command forward (-100) will actually go backward, and backward(-50) will actually go forward!
left(90) tells Tracy the Turtle to turn left 90 degrees. right(180) tells Tracy the Turtle to turn right by 180 degrees. To turn completely in a circle is 360 degrees. To face the opposite direction, turn 180 degrees. The lower the degrees in the turn, the smaller the angle of your turn.
left(90) tells Tracy the Turtle to turn left 90 degrees. right(180) tells Tracy the Turtle to turn right by 180 degrees. To turn completely in a circle is 360 degrees. To face the opposite direction, turn 180 degrees. The lower the degrees in the turn, the smaller the angle of your turn.
penup() is a command that allow 'turtle to move without drawing., pendown() is used when you want Turtle to begin drawing again.
penup() is a command that allow 'turtle to move without drawing., pendown() is used when you want Turtle to begin drawing again.
pensize(10) is the command to change how thick or thin the line is drawn. 1 is the smallest, 10 is thickest
pensize(10) is the command to change how thick or thin the line is drawn. 1 is the smallest, 10 is thickest
color("blue") is a command that turns the color being drawn to blue.
color("blue") is a command that turns the color being drawn to blue.
To see the rest of the code commands you can use to create with Tracy the Turtle, click on the "Docs" tab next to the "Output" tab.
To see the rest of the code commands you can use to create with Tracy the Turtle, click on the "Docs" tab next to the "Output" tab.
You can copy and paste, or just type the code commands into your sandbox.
You can copy and paste, or just type the code commands into your sandbox.
This code makes Turtle draw a square. There is a pattern. Do you see the pattern? Move forward 75 pixels, then turn to the left at 90 degrees (1/4 turn), and do that 4 times. Walk it on the floor only 3 steps, not 75 pixels!
If you want to copy & paste it, here it is!:
forward(75)
left(90)
forward(75)
left(90)
forward(75)
left(90)
forward(75)
left(90)
Whenever you see a pattern, you can probably use a repeat loop. So instead of forward, left, forward, left, forward, left, forward, left... I can code "forward, left, and do those two command 4 times total!"
When using repeat loops in Python, all the code that is being repeated MUST be indented - see how the word "for" is lined up on the left side near the line numbers? And the two lines of code below it actually start under the "i"? To indent code lines, use the "Tab" key, then type or paste your code.
for i in range(4):
forward(75)
left(90)
Did you know you can put a repeat loop inside of a repeat loop? This is called "nesting".
When Turtle draws a square, then turns 36 degrees, then repeats the square, turn36, square, 36, etc. it makes a cool design!
Give it a try yourself.
speed(0)
for i in range(10):
for i in range(4):
forward(75)
left(90)
left(36)
try changing the 36 degree turn to something smaller, or larger (between 3 and 180)
you may also need to change the number of times it repeats from 10 to something larger or smaller
try changing the forward pixels to a different length up to 200.
speed(0)
for i in range(40):
for i in range(4):
forward(150)
left(90)
left(10)
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