import turtle bob = turtle.Turtle() for i in range(1,5): bob.fd(100) bob.lt(90) turtle.mainloop()
import turtle import math def circle(t,r,a): #传入接口arc，在arc中完成大部分计算 arc(t,r,a) def arc(t,r,a): #计算边的长度，同时设定边的个数 length = 2 * math.pi * r * abs(a) / 360 n = int(length / 4) + 3 step_length = length / n step_angle = a / n polygon(t, step_length, n) def polygon(t, length, n): #画出图形 for i in range(n): t.fd(length) t.lt(360/n) bob = turtle.Turtle() radius = 50 angle = 360 circle(bob, radius, angle) turtle.mainloop()
import turtle def draw_spiral(t, n, length=3, a=0.1, b=0.0002): #Draws an Archimedian spiral starting at the origin theta = 0.0 for i in range(n): t.fd(length) dtheta = 1 / (a + b * theta) t.lt(dtheta) theta += dtheta #create the world and bob bob = turtle.Turtle() draw_spiral(bob, n=1000) turtle.mainloop()
import turtle def draw_diamond(turt): for i in range(1,3): turt.forward(100) turt.right(45) turt.forward(100) turt.right(135) def draw_art(): window = turtle.Screen() #视窗 window.bgcolor("black") #背景颜色 brad = turtle.Turtle() #创建一个“乌龟”对象 brad.shape("turtle") #设定画笔图像是乌龟 brad.color("red") #设定画笔颜色是红色 brad.speed("fast") #画画速度是快 for i in range(1, 37): #调用diamond函数36次，即画36个花瓣 draw_diamond(brad) brad.right(10) brad.right(90) #画出枝干 brad.forward(1000) window.exitonclick() draw_art()
import math import turtle def polyline(t, n, length, angle): #Draws n line segments for i in range(n): t.fd(length) t.lt(angle) def arc(t, r, angle): #Draws an arc with given radius and angle arc_length = 2 * math.pi * r * abs(angle) / 360 n = int(arc_length / 4) + 3 step_length = arc_length / n step_angle = float(angle) / n t.lt(step_angle/2) polyline(t, n, step_length, step_angle) t.rt(step_angle/2) def petal(t, r, angle): #Draws a petal using two arcs. for i in range(2): arc(t, r, angle) t.lt(180 - angle) def flower(t, n, r, angle): #Draws a flower with n petals for i in range(n): petal(t, r, angle) t.lt(360.0/n) def move(t, length): #Move turtle(t) forwoard (length) units without leaving a trail # t.pu() t.fd(length) t.pd() bob = turtle.Turtle() #draw a sequence of three flowers move(bob, -100) flower(bob, 7, 60.0, 60.0) move(bob, 100) flower(bob, 10, 40.0, 80.0) move(bob, 100) flower(bob, 20, 140.0, 20.0) bob.hideturtle() turtle.mainloop()
import turtle t = turtle.Pen() turtle.bgcolor("black") #sides = eval(str(input("输入要绘制的边的数目，请输入2-6Dev数字！ "))) sides = 6 colors = ["red","yellow","green","blue","orange","purple"] for x in range(360): t.pencolor(colors[x%sides]) #随机颜色 t.speed("fast") t.forward(x*3/sides+x) #六边形长度依次增加 t.left(360/sides+1) #转动角度依次变化 t.width(x*sides/180) t.left(91) print ("结束")
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年%d月%d日" % (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()
