Draw flag with Python's turtle module

EditDraw flag with Python's turtle module

In Udacity class, learned the Python turtle method, this is a very classic to teach children programming graphics module, originally originated from the logo language. Python itself has built-in this module, and its visual approach can help children understand some of the basic concepts of programming.
In the job submission forum to see a lot of turtle drawing out of the beautiful graphics, can not think of anything to draw things, so decided to take flag to practice practiced hand.

Pre-preparation

• Flag Drawing parameters
• Turtle Official documents

Basic operation of Turtle

# Initialize Screenwindow= Turtle. Screen ()# New Turtle Object InstanceImportTurtleaturtle = Turtle. Turtle ()# Turtle SettingsAturtle.hideturtle ()# Hide ArrowsAturtle.speed (Ten)# Set Speed# Forward and backward, turn left and rightATURTLE.FD ( -)# forward 100 megapixelsAturtle.right ( -)# Turn right 90 °Aturtle.back ( -) Aturtle.left ( -)# Fill ColorAturtle.begin_fill () Aturtle.fillcolor (' Yellow ') Dosomethinghere () Aturtle.end_fill ()# lift the pen up and down, so the operation won't leave a traceAturtle.penup () Aturtle.goto (start_pos) aturtle.fd (RADIUS) Aturtle.pendown ()

Drawing Flag Code

GitHub Address: Https://gist.github.com/dc11287081ee67075da8

#!/usr/bin/env python#-*-coding:utf-8–*-"For some encapsulation methods of the Turtle class, including drawing regular polygon, positive and flag. " "__author__ =' Hu Wenchao 'ImportTurtleImportMath def draw_polygon(aturtle, size=, n=3):    "' Draw regular Polygon Args:aTurtle:turtle object instance size:int type, positive polygon side length n:int type, is a few sides"     forIinchXrange (N): aturtle.forward (size) Aturtle.left (360.0/n) def draw_n_angle(aturtle, size=, num=5, Color=none):    "' Draws a positive n-angle shape, the default is the yellow Args:aTurtle:turtle object instance Size:int type, the positive side length n:int type, is a corner color: STR, graphic color, default no coloring " '    ifColor:aTurtle.begin_fill () aturtle.fillcolor (color) forIinchXrange (num): aturtle.forward (size) Aturtle.left (360.0/num) Aturtle.forward (size) aturtle.right (2*360.0/num)ifColor:aTurtle.end_fill ()def  draw_5_angle   (Aturtle=none, Start_pos= 0 , 0 ) , End_pos = 0 , 10 ) , Radius=100 , Color=none) :     "' circumscribed circle the Star Args:aTurtle:turtle object instance based on the starting position, the end position and the radius of the Start_pos:int two tuple, the circumscribed Circle center of the pentagram to be drawn End_po S:int two tuple, the center point points to the location of the coordinate point radius: Pentagram circumscribed circle radius color:str, graphic color, default does not fill the color ""Aturtle = AturtleorTurtle. Turtle () size = radius * Math.sin (math.pi/5)/math.sin (math.pi*2/5) Aturtle.left (Math.degrees (Math.atan2 (end_pos[1]-start_pos[1], end_pos[0]-start_pos[0]))) Aturtle.penup () Aturtle.goto (start_pos) aturtle.fd (RADIUS) Aturtle.pendown () Aturtle.right (math.degree S (math.pi*9/Ten)) Draw_n_angle (aturtle, size,5, color) def draw_5_star_flag(times=20.0):    "Draw flag Args:times: Flag specifications for 30*20, times for multiples, the default size is 10 times, that is, 300*200"width, height = -*times, -*times# Initialize screen and turtlewindow = Turtle. Screen () Aturtle = Turtle. Turtle () Aturtle.hideturtle () Aturtle.speed (Ten)# Draw a red flagAturtle.penup () Aturtle.goto (-width/2, height/2) Aturtle.pendown () Aturtle.begin_fill () Aturtle.fillcolor (' Red ') aturtle.fd (width) aturtle.right ( -) aturtle.fd (height) aturtle.right ( -) aturtle.fd (width) aturtle.right ( -) aturtle.fd (height) aturtle.right ( -) Aturtle.end_fill ()# Draw a big star #Draw_5_angle (Aturtle, start_pos= (-Ten*times,5*times), end_pos= (-Ten*times,8*times), radius=3*times, color=' Yellow ')# draw four Little starsStars_start_pos = [(-5,8), (-3,6), (-3,3), (-5,1)] forPosinchStars_start_pos:draw_5_angle (Aturtle, start_pos= (pos[0]*times, pos[1]*times), end_pos= (-Ten*times,5*times), radius=1*times, color=' Yellow ')# click Close WindowWindow.exitonclick ()if__name__ = =' __main__ ': Draw_5_star_flag ()

Draw flag with Python's turtle module