Python turtle drawing example tutorial

This paper introduces the use of python turtle module, i.e. turtle drawing, in the form of an example.

About the python turtle module:
  A simple drawing tool introduced in python2.6 called Turtle Graphics

First we need to import turtle , as follows:

 from turtle import * # will turtle All method imports in 

2. Turtle drawing attributes:

  (1) location
  (2) The direction of
  (3) The brush ( Brush properties, color, line width )

3. There are many commands for manipulating turtle drawing, which can be divided into two types: one is motion command, the other is brush control command

(1) Movement command:

  forward(degree)  # Forward travel degree On behalf of the distance 
  backward(degree)  # Backward travel degree On behalf of the distance 
  right(degree)    # How many degrees to the right 
 left(degree)  # How many degrees to the left 
 goto(x,y)  # Move the brush to the coordinate of x,y The location of the 
  stamp()     # Copy the current figure 
 speed(speed)  # The speed range the brush draws [0,10] The integer 

(2) Brush control command:

 down() # Draw as you move , It is also drawn by default 
 up() # Move without drawing a graph 
 pensize(width) # The width at which the graph is drawn 
 color(colorstring) # Color when drawing a figure 
 fillcolor(colorstring) # Draws the fill color of the graph 
 fill(Ture)
 fill(false)

Let's take a look at an example of turtle:

(I) draw a square:

 import turtle
 import time
# Defines the color of the brush when drawn 
 turtle.color("purple")
# Defines the width of the brush line when drawn 
 turtle.size(5)
# Defines the speed of drawing  
turtle.speed(10)
# In order to 0,0 Draws the starting point 
 turtle.goto(0,0)
# Draw the four sides of the square 
 for i in range(4):
   turtle.forward(100)
   turtle.right(90)
# Move the brush to a point (-150,-120) Without drawing 
 turtle.up()
 turtle.goto(-150,-120)
# Again, define the brush color 
 turtle.color("red")
# in (-150,-120) Point to print "Done"
 turtle.write("Done")
 time.sleep(3)

(2) drawing a pentagram:

import turtle
import time
turtle.color("purple")
turtle.pensize(5)
turtle.goto(0,0)
turtle.speed(10)
for i in range(6):
 turtle.forward(100)
 turtle.right(144)
turtle.up()
turtle.forward(100)
turtle.goto(-150,-120)
turtle.color("red")
turtle.write("Done")
time.sleep(3)

Here are two simple examples, you can according to the above ideas and methods to further expand, draw some more complex graphics.