Draw simple graphics using the Turtle library in Python

Turtle Graphics Library

Turtle Library is a python built-in graphical module, belonging to one of the standard libraries, in the Python installation directory of the Lib folder, commonly used functions are the following:

• Brush control functions
  1. penup(): Lift up the brush;
  2. pendown(): Falling brush;
  3. pensize(width): Brush width;
  4. pencolor(color): Brush color;

• Motion control functions
  1. forward(d)/fd(d): Straight line D pixels;
  2. circle(r, extent = None): Draw radius R, Angle is extent arc, center default is the location of R on the left side of the turtle;

• Direction control function
  1. setheading(angle)/seth(angle): Change the way forward;
  2. left(angle): Turtle turn left;
  3. right(angle): Turtle Right turn;

Use of the Turtle Library

#coding=utf-8#绘制蟒蛇import turtleturtle.penup()turtle.pencolor("red")turtle.forward(-250)turtle.pendown()turtle.pensize(10)turtle.right(45)for i in range(4):    turtle.circle(40, 80)    turtle.circle(-40, 80)turtle.circle(40, 80 / 2)turtle.fd(40)turtle.circle(16, 180)turtle.fd(40 * 2 / 3)turtle.done()

Results

#coding=utf-8# 绘制五角星import turtleturtle.pensize(5)turtle.pencolor("red")turtle.forward(200)for i in range(4):    turtle.right(144)    turtle.fd(200)turtle.done()

Results

#绘制时钟 # Coding=utf-8import Turtle as Ttfrom datetime import *# The current date belongs to the day of the Week Def Week (t): Week = ["Monday", "Tuesday", "Wednesday", "Week" Four "," Friday "," Saturday "," Sunday "] return Week[t.weekday ()]# get current time def date (t): y = t.year m = t.month D = t.day cur_    hour = T.hour;    Cur_min = T.minute;    Cur_sec = T.second; Return "%s-%d-%d%d:%02d:%02d"% (Y, M, D, Cur_hour, Cur_min, cur_sec) # move brush, distance is distancedef movepen (distance): Tt.penup () tt.pensize (5) Tt.pencolor ("Blue") tt.fd (distance) Tt.pendown () # Draw the needle def makehands (name, length): # Empty the window, Reset Turtule status to Initial state Tt.reset () Movepen (-length * 0.1) # start record polygon vertex tt.begin_poly () tt.fd (length * 1.1) # Stop Record polygon Vertex tt.end_poly () # Returns the recorded polygon Handform = Tt.get_poly () tt.register_shape (name, Handform) # Initialize def initial () : Global Sechand, Minhand, Hurhand, printer # Reset direction North (UP), positive angle to clockwise Tt.mode ("logo") # Set up and initialize the needle makehands ("Secha nd ", Minhand) makehands (" Hurhand "," makehands ") Sechand = tT.turtle () sechand.shape ("Sechand") Minhand = TT. Turtle () minhand.shape ("Minhand") Hurhand = TT. Turtle () hurhand.shape ("Hurhand") for hand in Sechand, Minhand, HurHand:hand.shapesize (1, 1, 4) hand. Speed (0) # output text printer = TT. Turtle () # Hide Brush Printer.hideturtle () Printer.penup () # Draw dial Frame def drawclock (R): # empty window, reset turtule status to initial state tt.re            Set () # Brush size tt.pensize (5) for I in range: Movepen (R) If I% 5 = = 0:TT.FD (20) Movepen (-r-20) Movepen (R +) If i = = 0: # Write text tt.write (int (1 2), align= "Center", font= ("Consolas", +, "bold")) elif i = = 30:movepen (+) TT.W Rite (int (I/5), align= "Center", font= ("Consolas", +, "bold")) Movepen ( -25) elif (i = = or i)        = = +): Movepen (tt.write) (int (I/5), align= "Center", font= ("Consolas", "bold"))        Movepen ( -20) else:tt.write (int (I/5), align= "Center", font= ("Consolas", "bold"))        Movepen (-r-20) Else: # Draws a specified radius and color point Tt.dot (5, "Red") Movepen (-R) Tt.right (6) # Dynamic display of the needle Def Handsmove (): t = datetime.today () Second = T.second + T.microsecond * 0.000001 minute = T.minute + second/60.0 hour = T.hour + minute/60.0 Sechand.seth (6 * second) Minhand.seth (6 * minute) Hurha  Nd.seth (hour) tt.tracer (False) printer.fd (+) Tt.pencolor ("green") Printer.write (Week (t), align= "center", Font = ("blackbody", +)) Printer.back (Printer.write) (Date (t), align= "center", Font = ("Consolas", 14)) # Sets the current brush position to Origin, Direction East Printer.home () Tt.tracer (True) # after 100ms continues to call the Handsmove function Tt.ontimer (handsmove, 100) # Call the defined function, open and close the animation, for Update sheet setup delay; tt.tracer (False) initial () Drawclock () tt.tracer (True) Handsmove () Tt.mainloop ()

Results

Draw simple graphics using the Turtle library in Python