9. Advanced knowlegde about turtle.

You will have to complete 1 task in this chapter.

This chapter will give you more functions about turtle and their usages. There will be a small task along with this chapter.

This video contains some advance funtions of turtle

These are the functions, structures and their usages that you have been provided.

Purpose	Command
Import Python turtle graphic.	import turtle
Create a name for your turtle.	name = turtle.Turtle()
Choosing a shape. if you skip the command choosing a shape for your turtle then your turtle shape will automatically be an arrow.	name.shape(‘shape’) You have to replace ‘shape’ by one of these shapes: arrow, circle, square, triangle or turtle.
Choosing a color if you skip the command choosing a color for your turtle then your turtle color will automatically be black.	name.color(‘color’) You have to replace ‘color’ by the color that you wish to.
Setting a default location to (0,0)	name.goto(0,0)
Setting a background If you don’t want to have background image for your turtle, please skip this part.
Call the screen function.	screen=turtle.Screen().
Set background to the picture that you like.	screen.bgpic(“picture_file”) Click to the image icon and look at 3 images that it contains. Replace ‘picture_file’ with the image file that you like.
Movement commands
Make the turtle goes forward in the current direction.	turtle.forward(steps)
Turns the turtle to the left direction in number degrees.	turtle.left(degrees)
Turns the turtle to the right direction in number degrees.	turtle.right(degrees)
Pointing a variable to an object.	variable = object The object can be in any type: integer, decimal, list, etc.
Setting turtle pen to a color	turtle. pencolor('color') Replace ‘color’ by a color that you want.
Make the turtle goes backward in the current direction	turtle.backward(steps) Replace “steps” by an integer.
Draw a semi circle	turtle.circle(radius, 180) Replace radius by either a decimal or an integer. 180 is fixed for SEMI-CIRCLE only.
Draw a circle	turtle.circle(radius) Replace radius by either a decimal or an integer.
The general while loop is: n = a while n < c: code chunk n = n + b	The general for loop is: for i inrange(i): code chunk

Below are some useful and common functions of turtle graphics

Draw a circular dot with diameter size, using color

turtle.dot(size=None, *color)
Replace size by either an integer or a float. No need to set up a color if you don’t want to.

Set the turtle’s speed to an integer value in the range 0 to 10

Turtle.speed(speed = None)

“fastest”: 0
”fast”: 10
”normal”: 6
“slow”: 3
“slowest”: 1

Set the orientation of the turtle to to_angle

turtle.setheading(to_angle)

standard mdoe	logo mode
0 - east	0 - north
90 - north	90 - east
180 - west	180 - south
270 - south	270 - west

Replace “to_ange” to one of the integer in the table above based on your need

Set the line thickness to width

turtle.pensize(width=None)
width – a positive number

Fill color inside a shape

turtle.fillcolor(*args)
Replace “*args” by the color that you want. For instance, if you want to fill in a circle with “red”, and your turtle name is “bob”, the correct command is bob.fillcolor(“red”).

Hide your turtle away

turtle.hideturtle()
You will just have to type the exact command like above to hide your turtle

Make your turtle appears again

Turtle.showturtle()
You will just have to type the exact command like above to make your turtle appears

set pencolor and fillcolor

turtle.color(*args)
Replace your “*args” with a color.

Task: Draw a flower like the image below

Instruction

Step 1:
- Set up your turtle name and color
- Set up the turtle speed based on the command that has been provided in the table above.
Step 2:
- Set up the pencolor and fillcolor based on the provided command in the table above. This color will be the color of your flower’s petals.
- The flower in the picture above has red petals.
Step 3: Write a for loop to draw the petals
- “i” in the for loop is the number of petals that you want your flower to have.
  Recommend that i should be around 5 to 8
- There 4 lines of code in the code chunk:
  - Move your turtle forward by 500/(number of petals)
  - Draw a circular dot with size of 500/(number of petals)
  - Move your turtle backward by 500/(number of petals)
  - Turn your turtle to the right for 360/(number of petals)
Step 4: draw the center of the circle
- Set up the pencolor and fillcolor based on the provided command in the table above. This color will be the color of your flower’s center.
  - Draw a circular dot with size of 500/(number of petals-1)

NOW PLEASE COMPLETE THE TASK !

# This solution will draw out a flower that look exactly like the provided image.

petals = 6
my_turtle = turtle.Turtle()
my_turtle.shape("turtle")
my_turtle.speed(1)
my_turtle.penup()
my_turtle.color("red")
for i in range(petals):
my_turtle.forward(500/(petals))
my_turtle.dot(500/(petals))
my_turtle.backward(500/(petals))
my_turtle.right(360/petals)
my_turtle.color("black")
my_turtle.dot(500/(petals-1))

  from browser import document
  import turtle
  turtle.set_defaults(
      turtle_canvas_wrapper = document['turtle-div1'])
  
  # DO NOT DELETE ABOVE THIS LINE
  ######## Write your code below
  
  name = turtle.Turtle()
  name.shape("turtle")
  name.color("red")
  
  # DO NOT DELETE BELOW THIS LINE
  turtle.done()

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Python Turtle Graphics

9. Advanced knowlegde about turtle.

Below are some useful and common functions of turtle graphics

Task: Draw a flower like the image below

Instruction

Congratulations! you finish