自学教程：Python画图练习案例分享

# 多边形的绘制案例import turtledef main():turtle.color("green")# steps代表多边形的绘制turtle.circle(50,steps=6)turtle.exitonclick()if __name__ == "__main__":main()

# 太阳花案例*******************************************************************import turtleimport timeturtle.color("red","yellow")turtle.begin_fill()for _ in range(50):turtle.speed(0)turtle.forward(200)turtle.left(170)turtle.end_fill()turtle.mainloop()

# 颜色五角星案例******************************************************************import turtleimport timeturtle.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"))turtle.mainloop()

# 艺术图片*************************************************************************import turtleturtle.speed(0)turtle.delay(0)turtle.pensize(2)turtle.bgcolor("black")colors=["red","blue","yellow","purple"]for x in range(300):turtle.color(colors[x%4])turtle.forward(2*x)turtle.left(91)turtle.done()

# #黑六边形*****************************************************************************import turtledef bye(x,y):turtle.bye()s = turtle.Screen()s.bgcolor("black")s.screensize(800,800)s.title("Class Using")s.onscreenclick(bye)p=turtle.Turtle()p.speed(0)p.hideturtle()p.pencolor("red")p.pensize(3)p.circle(50,360,6)turtle.done()

#绘制时钟************************************************************************************************import turtle as ttfrom datetime import *# 当前日期属于一周的第几天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()]# 获取当前时间def Date(t):y = t.yearm = t.monthd = t.daycur_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)# 移动画笔,距离为distancedef movePen(distance):tt.penup()tt.pensize(5)tt.pencolor("blue")tt.fd(distance)tt.pendown()# 绘制表针def makeHands(name, length):# 清空窗口，重置turtule状态为初始状态tt.reset()movePen(-length * 0.1)# 开始记录多边形的顶点tt.begin_poly()tt.fd(length * 1.1)# 停止记录多边形的顶点tt.end_poly()# 返回记录的多边形handForm = tt.get_poly()tt.register_shape(name, handForm)# 初始化def initial():global secHand, minHand, hurHand, printer# 重置方向向北(上)，正角度为顺时针tt.mode("logo")# 建立并初始化表针makeHands("secHand", 180)makeHands("minHand", 150)makeHands("hurHand", 110)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)# 输出文字printer = tt.Turtle()# 隐藏画笔printer.hideturtle()printer.penup()# 绘制表盘外框def drawClock(R):# 清空窗口，重置turtule状态为初始状态tt.reset()# 画笔尺寸tt.pensize(5)for i in range(60):movePen(R)if i % 5 == 0:tt.fd(20)movePen(-R - 20)movePen(R + 20)if i == 0:# 写文本tt.write(int(12), align="center", font=("Consolas", 14, "bold"))elif i == 30:movePen(25)tt.write(int(i / 5), align="center", font=("Consolas", 14, "bold"))movePen(-25)elif (i == 25 or i == 35):movePen(20)tt.write(int(i / 5), align="center", font=("Consolas", 14, "bold"))movePen(-20)else:tt.write(int(i / 5), align="center", font=("Consolas", 14, "bold"))movePen(-R - 20)else:# 绘制指定半径和颜色的点tt.dot(5, "red")movePen(-R)tt.right(6)# 表针的动态显示def handsMove():t = datetime.today()second = t.second + t.microsecond * 0.000001minute = t.minute + second / 60.0hour = t.hour + minute / 60.0secHand.seth(6 * second)minHand.seth(6 * minute)hurHand.seth(30 * hour)tt.tracer(False)printer.fd(65)tt.pencolor("green")printer.write(Week(t), align="center", font = ("黑体", 14))printer.back(130)printer.write(Date(t), align="center", font = ("Consolas", 14))# 设置当前画笔位置为原点，方向朝东printer.home()tt.tracer(True)# 经过100ms后继续调用handsMove函数tt.ontimer(handsMove, 100)# 调用定义的函数，打开和关闭动画，为更新图纸设置延迟；tt.tracer(False)initial()drawClock(200)tt.tracer(True)handsMove()tt.mainloop()

# 绘制分形树******************************************************************************import turtledef draw_branch(branch_length):'''绘制分形树'''if branch_length > 5:# 绘制右侧树枝turtle.forward(branch_length)print("向前：", branch_length)turtle.right(20)print("右转：20度")draw_branch(branch_length - 15)# 绘制左侧树枝turtle.left(40)print("左转：40度")draw_branch(branch_length - 15)# 返回之前的树枝turtle.right(20)print("右转：20度")turtle.backward(branch_length)print("向后：", branch_length)def main():'''主函数'''turtle.speed(0.5)turtle.pensize(3)turtle.left(90)turtle.color('green')turtle.penup()turtle.backward(150)turtle.pendown()turtle.bgcolor("black")draw_branch(100)turtle.exitonclick()if __name__ == "__main__":main()

# 彩虹线绘制案例***************************************************************************import turtle as tfrom random import randint as rintt.shape("turtle")t.pensize(5)t.colormode(255)t.bgcolor("black")t.tracer(False)for x in range(700):t.color(rint(0,255),rint(0,255),rint(0,255))t.circle(2*(1+x/4),5)t.speed(0)t.tracer(True)t.exitonclick()