Programming

Programming

1. Programming is simply providing instructions to a computer to solve a problem

2. The main skill that programming requires is problem solving

3. Import turtle

   • wn = turtle.Screen()
     • daisy = turtle.Turtle()
       • These three lines of code are essential. Without them the code will fail.

4. daisy.forward(150)

   • Name followed by dot and instruction then brackets and the amount of pixels.
   • daisy.left(90)
     • daisy.right(90)
       • Basic movement commands
         • Also include goto(coorodinates)
           • turtle.pensize()
             • turtle.widthe()
           • daisy.goto(300,-300)

5. daisy.penup()

   • daisy.pendown()
     • Allows pen to be lifted to correct location without drawing and then put back down again

6. daisy.pencolor("red")

   • makes pen a certain colour and when you want to change the colour you reinsert this line of code with a different colour in the brackets.

7. daisy.fillcolor("yellow")

   • fills in the inside of an object with that colour. Also changeable
   • Before filling needs the line of code daisy.begin_fill()
   • After fill is complete the line daisy.end_fill() is required.

8. For x in range(5):

   • daisy.forward(200)
     • daisy.left(72)
       • This line of code is repeated however many times is in the bracket to make a shape quicker.

9. We can use procedures to make more efficient code.

   • DrawPentagon can be used
     • def drawPentagon():
       • for x in range(5):
         • daisy.forward(200)
           • daisy.left(72)
             • This code is now under drawPentagon so whenever drawPentagon is called up it will do what the code at the start says.
     • Always put any new procedures at the top of the code.