Welcome to Making with Code! #

We’re glad you’re here! yay 😄

👾 💬 FYI

Here’s my first FYI: you will see 💻 throughout each lab.

This means that you need do something that involves writing code or using your Terminal. You can use these like little action items during labs.

[0] Your First Turtle Drawing #

💻 Go to: bit.ly/day1_cs9. Experiment with turtle commands below.

Function	Input	Example Use	Explanation
forward	amount	`forward(100)`	Moves the turtle forward by the specified amount
backward	amount	`backward(100)`	Moves the turtle backward by the specified amount
right	angle in degrees	`right(45)`	Turns the turtle clockwise by the specified angle
left	angle in degress	`left(45)`	Turns the turtle counter clockwise by the specified angle
color	colorname	`color('red')`	Sets the color for drawing. Use “red”, “black”, etc. Here’s a list of all the colors.
speed	number from 0-10	`speed(0)`	Determines the speed at which the turtle moves around the window. 1 for slowest, 3 for normal speed, 10 for fast, 0 for fastest.
pendown	None	`pendown()`	Puts down the turtle/pen so that it draws when it moves
penup	None	`penup()`	Picks up the turtle/pen so that it doesn’t draw when it moves
pensize	width	`pensize(4)`	Sets the width of the pen for drawing
setheading	angle	`setheading(90)`	Sets the pen to the 0th degree
circle	size	`circle(10)`	Sets the radius of the circle
goto	x, y	`goto(90,0)`	Moves turtle to a given coordinate
begin_fill	None	`begin_fill()`	Marks the start of the color fill
end_fill	None	`end_fill()`	Marks the end of the color fill
fillcolor	colorname	`fillcolor('purple')`	Sets the color of the fill

Error and Bugs #

While trying this out, you may come across errors or bugs, do not fear! Write the issue down, and we can talk about it during class. Try to figure out whether your bug is a:

Programmatic error (which happens when the program does something different than what you wanted. Remember that this happened when we set the angle to the wrong number)

Syntax error (which happens when the program crashes because the program cannot be understood by the computer. Remember that this happened when we forgot a parentheses).