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Presentation: Turtle Graphics Using Python

Today I co-presented at the OSSTF Embracing Technology Conference. Our topic was Turtle Graphics Using Python: A Gentle Introduction to Programming.

The audience was mostly teachers new to programming, so I’m really pleased that most of them were able to keep up. It was also great to see them working in groups to solve the challenges together.

Note to self: Nested loops is a challenge for beginners. Re-think that for the next time I do this presentation!

To view the presentation for yourself, visit this link:

https://www.beens.org/osstf-2018-python/

Turtle Graphics Cheatsheet

Turtle Pen
turtle.pen(pencolor=”red”, pensize=10, fillcolor=”black”) Pens have attributes such as color, size, and fillcolor.
turtle.up() Sets the pen state to be up (not drawing).
turtle.down() Sets the pen state to be down (drawing).
turtle.color(r,g,b) See below
turtle.color(s) Sets the color that the pen will draw until the color is changed. It takes either 1) three arguments, each a floating point number between 0.0 — 1.0, where the first the amount of red, the second is the amount of green, and the third is the amount of blue, or 2) a “color string” the name of a TK color (e.g., “black”, “red”, “blue”, …)
turtle.begin_fill() See below
turtle.end_fill() To fill a figure, use turtle.begin_fill() before you start drawing the figure. Draw the figure. Then execute turtle.end_fill(). The figure drawn between the two fill commands will be filled with the present color setting.
turtle.hideturtle() See below
turtle.showturtle() Sets the state to hide / show the turtle. When shown, you see it as a small arrowhead pointed in the direction of the heading.
turtle.fill(True) To fill a figure, use turtle.fill(True) before you start drawing the figure. The figure drawn will be filled with the present color setting.
Turtle Draw
turtle.right(degrees) Turns the direction that the turtle is facing right (clockwise) by the amount indicated (in degrees).
turtle.left(degrees) Turns the direction that the turtle is facing left (counterclockwise) by the amount indicated (in degrees).
turtle.forward(distance) Moves the turtle forward (in the direction the turtle is facing) the distance indicated (in pixels). Draws a line if the pen is down, not if the pen is up.
turtle.backward(distance) Moves the turtle backward (in the direction opposite to how the turtle is facing) the distance indicated (in pixels). Draws a line if the pen is down, not if the pen is up.
turtle.setheading(angle) Sets the orientation of the turtle to angle. Here are some common directions in degrees: 0 (east) 90 (north) 180 (west) 270 (south)
turtle.goto(x,y) Moves the turtle to the specified coordinates, drawing a straight line to the destination (x,y) if the pen is down, and not drawing if the pen is up.
turtle.circle(radius) Draws a circle of the indicated radius. The turtle draws the circle tangent to the direction the turtle is facing.
Turtle other
turtle.xcor(),turtle.ycor() Returns the x – coordinate / y – coordinate of the current pen position.
x, y = turtle.pos() Sets the variables x and y to the turtle’s current position
turtle.exitonclick() or turtle.done() To prevent the screen from closing.
turtle.bye() Close the turtle drawing window
turtle.speed(integer) Set the animation speed of the turtle. 1 = slowest, 10 = fastest. 0 turns off animation completely
turtle.shape(‘turtle’) Set the shape. You can also choose from arrow, square, circle, triangle and classic
Compiled from: http://bit.ly/2J8Cj77
http://bit.ly/2kr4tMN
http://bit.ly/2krp7MJ

ICT Ethics Assignment

Create an infographic (Affinity Designer is recommended for this) or Google Doc or podcast or video that shows an ICT-related ethical issue which:

  • clearly defines what the issue is all about,
  • convincingly shows us how to resolve it, and
  • recommends alternatives/safeguards which exist to protect against such issues in the future (if applicable).

Topic Suggestions

  • Music and video file downloading
  • Spyware
  • Identity theft
  • Phishing
  • Keystroke logging
  • Packet sniffing
  • Biometric data
  • Effective passwords
  • Firewalls
  • Secure websites
  • Cyber bullying

Citations

Be sure to give credit to all your sources!

Inspiration and credit for this assignment:
https://github.com/mrseidel-classes/ICS2O/wiki/Ethics

Python String Assignments

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