# coding=utf-8 
import turtle 
import time 
 
# 同时设置pencolor=color1, fillcolor=color2 
turtle.color("red", "yellow")  
turtle.begin_fill() 
for _ in range(50): 
turtle.forward(200) 
turtle.left(170) 
turtle.end_fill() 
turtle.mainloop() 

# coding=utf-8 
import turtle 
import time 
 
turtle.pensize(5) 
turtle.pencolor("yellow") 
turtle.fillcolor("red") 
 
turtle.begin_fill() 
for _ in range(5): 
 turtle.forward(200) 
 turtle.right(144) 
turtle.end_fill() 
time.sleep(2) 
  
turtle.penup() 
turtle.goto(-150,-120) 
turtle.color("violet") 
turtle.write("Done", font=('Arial', 40, 'normal')) 
 
turtle.mainloop() 

# coding=utf-8 
import turtle 
from datetime import * 
# 抬起画笔，向前运动一段距离放下 
def Skip(step): 
  turtle.penup() 
  turtle.forward(step) 
  turtle.pendown() 
def mkHand(name, length): 
  # 注册Turtle形状，建立表针Turtle 
  turtle.reset() 
  Skip(-length * 0.1) 
  # 开始记录多边形的顶点。当前的乌龟位置是多边形的第一个顶点。 
  turtle.begin_poly() 
  turtle.forward(length * 1.1) 
  # 停止记录多边形的顶点。当前的乌龟位置是多边形的最后一个顶点。将与第一个顶点相连。 
  turtle.end_poly() 
  # 返回最后记录的多边形。 
  handForm = turtle.get_poly() 
  turtle.register_shape(name, handForm) 
def Init(): 
  global secHand, minHand, hurHand, printer 
  # 重置Turtle指向北 
  turtle.mode("logo") 
  # 建立三个表针Turtle并初始化 
  mkHand("secHand", 135) 
  mkHand("minHand", 125) 
  mkHand("hurHand", 90) 
  secHand = turtle.Turtle() 
  secHand.shape("secHand") 
  minHand = turtle.Turtle() 
  minHand.shape("minHand") 
  hurHand = turtle.Turtle() 
  hurHand.shape("hurHand") 
  for hand in secHand, minHand, hurHand: 
    hand.shapesize(1, 1, 3) 
    hand.speed(0) 
  # 建立输出文字Turtle 
  printer = turtle.Turtle() 
  # 隐藏画笔的turtle形状 
  printer.hideturtle() 
  printer.penup() 
def SetupClock(radius): 
  # 建立表的外框 
  turtle.reset() 
  turtle.pensize(7) 
  for i in range(60): 
    Skip(radius) 
    if i % 5 == 0: 
      turtle.forward(20) 
      Skip(-radius - 20) 
       
      Skip(radius + 20) 
      if i == 0: 
        turtle.write(int(12), align="center", font=("Courier", 14, "bold")) 
      elif i == 30: 
        Skip(25) 
        turtle.write(int(i/5), align="center", font=("Courier", 14, "bold")) 
        Skip(-25) 
      elif (i == 25 or i == 35): 
        Skip(20) 
        turtle.write(int(i/5), align="center", font=("Courier", 14, "bold")) 
        Skip(-20) 
      else: 
        turtle.write(int(i/5), align="center", font=("Courier", 14, "bold")) 
      Skip(-radius - 20) 
    else: 
      turtle.dot(5) 
      Skip(-radius) 
    turtle.right(6)    
def Week(t):   
  week = ["星期一", "星期二", "星期三", 
      "星期四", "星期五", "星期六", "星期日"] 
  return week[t.weekday()]  
def Date(t): 
  y = t.year 
  m = t.month 
  d = t.day 
  return "%s %d%d" % (y, m, d)   
def Tick(): 
  # 绘制表针的动态显示 
  t = datetime.today() 
  second = t.second + t.microsecond * 0.000001 
  minute = t.minute + second / 60.0 
  hour = t.hour + minute / 60.0 
  secHand.setheading(6 * second) 
  minHand.setheading(6 * minute) 
  hurHand.setheading(30 * hour)    
  turtle.tracer(False)  
  printer.forward(65) 
  printer.write(Week(t), align="center", 
         font=("Courier", 14, "bold")) 
  printer.back(130) 
  printer.write(Date(t), align="center", 
         font=("Courier", 14, "bold")) 
  printer.home() 
  turtle.tracer(True)   
  # 100ms后继续调用tick 
  turtle.ontimer(Tick, 100) 
def main(): 
  # 打开/关闭龟动画，并为更新图纸设置延迟。 
  turtle.tracer(False) 
  Init() 
  SetupClock(160) 
  turtle.tracer(True) 
  Tick() 
  turtle.mainloop() 
  
if __name__ == "__main__": 
  main() 

#-*- coding: utf-8 -*-
import turtle
turtle.reset()
a= 60
turtle.fillcolor("red")
turtle.pencolor("blue")
turtle.pensize(10)
turtle.fill(True)
turtle.left(90)
turtle.forward(a)
turtle.left(90)
turtle.forward(a)
turtle.left(90)
turtle.forward(a)
turtle.left(90)
turtle.forward(a)
turtle.fill(False)

from numpy import *
from random import random
import turtle
turtle.reset()
x = array([[.5],[.5]])
p = [0.85,0.92,0.99,1.00]
A1 = array([[.85, 0.04],
      [-0.04,.85]])
b1 = array([[0],[1.6]])
A2 = array([[0.20,-0.26],
      [0.23,0.22]])
b2 = array([[0],[1.6]])
A3 = array([[-0.15,0.28],
      [0.26,0.24]])
b3 = array([[0],[0.44]])

A4 = array([[0,0],
      [0,0.16]])

turtle.color("blue")
cnt = 1
while True:
  cnt += 1
  if cnt == 2000:
    break
  r = random()
  if r < p[0]:
    x = dot(A1 , x) + b1
  elif r < p[1]:
    x = dot(A2 , x) + b2
  elif r < p[2]:
    x = dot(A3 , x) + b3
  else:
    x = dot(A4 , x)
  #print x[1]
  turtle.up()
  turtle.goto(x[0][0] * 50,x[1][0] * 40 - 240)
  turtle.down()
  turtle.dot()