Python程序设计之初窥门径

痛定思痛。 2023-06-10 12:20 22阅读 0赞

1.正方形螺旋线的绘制。  
(1)利用turtle库绘制一个正方形螺旋线，效果如下图所示。

import turtle
    
    turtle.speed("fastest")
    turtle.pensize(2)
    for x in range(100):
        turtle.forward(2*x)
        turtle.left(90)

![在这里插入图片描述][20191027175820362.png]

(2)修改上面程序，绘制斜螺旋线，效果如下图所示。

import turtle
    
    turtle.speed("fastest")
    turtle.pensize(2)
    for x in range(100):
        turtle.forward(2*x)
        turtle.left(91)

![在这里插入图片描述][20191027175843353.png]

(3) 修改上面程序，绘制彩色斜螺旋线，效果如下图所示。

import turtle
    
    turtle.speed("fastest")
    turtle.pensize(2)
    colors=["red","yellow",'purple','blue']
    for x in range(100):
        turtle.pencolor(colors[x%4])
        turtle.forward(2*x)
        turtle.left(91)

![在这里插入图片描述][20191027175853360.png]

4 彩色蟒蛇绘制。对 Python 蟒蛇的每个部分采用不同颜色，绘制一条彩色蟒蛇。

import turtle
    
    def drawSnake(rad, angle, len, neckrad):
        colors = ["purple", "red", "yellow", "pink", "blue"]
        for i in range(len):
            turtle.color(colors[i])
            turtle.circle(rad, angle)
            turtle.circle(-rad, angle)
    
        turtle.color("green")
        turtle.circle(rad, angle / 2)
        turtle.fd(rad)
        turtle.circle(neckrad + 1, 180)
        turtle.fd(rad * 2 / 3)
    
    
    def main():
        turtle.setup(1300, 800, 0, 0)
        turtle.penup()
        turtle.goto(-350, 0)
        turtle.pendown()
        pythonsize = 30
        turtle.pensize(pythonsize)
        turtle.seth(-40)
        drawSnake(40, 80, 5,pythonsize / 2)
    
    
    main()

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjEzOTMx_size_16_color_FFFFFF_t_70]

4.绘制奥运五环图，其中五种颜色分别为蓝色、黑色、红色、黄色和绿色。

import turtle
    
    turtle.pensize(10)
    
    turtle.color("blue")
    turtle.penup()
    turtle.goto(-110,-25)
    turtle.pendown()
    turtle.circle(45)
    
    turtle.color("black")
    turtle.penup()
    turtle.goto(0,-25)
    turtle.pendown()
    turtle.circle(45)
    
    turtle.color("red")
    turtle.penup()
    turtle.goto(110,-25)
    turtle.pendown()
    turtle.circle(45)
    
    turtle.color("yellow")
    turtle.penup()
    turtle.goto(-55,-75)
    turtle.pendown()
    turtle.circle(45)
    
    turtle.color("green")
    turtle.penup()
    turtle.goto(55,-75)
    turtle.pendown()
    turtle.circle(45)

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjEzOTMx_size_16_color_FFFFFF_t_70 1]

5.制作一个模拟windows启动界面的文本进度条。

import time
    scale=50
    print()
    for i in range(1,12):
        if i in(1,6,11):
            print("{0: ^50}".format('-'*20))
        else:
            print("{0:>15}{1: ^20}{2: <15}".format('|','|','|'))
    print("正在启动windows...".center(scale,'-'))
    print()
    for i in range(scale+1):
        a='|'*i
        b='.'*(scale-i)
        c=(i/scale)*100
        print("\r[{}{}]{:^3.0f}%".format(a,b,c),end='')
        time.sleep(0.3)
    print()
    print("\n"+"启动完成！".center(scale,'-'))

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjEzOTMx_size_16_color_FFFFFF_t_70 2]

[20191027175820362.png]: /images/20230531/7cd2e22a8df4409cb25cace9ba1160f7.png
[20191027175843353.png]: /images/20230531/dcf45d583f1f476e8777dd5d43fe9529.png
[20191027175853360.png]: /images/20230531/b6ddbd45b9c14a8a853e42fc1208f50a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjEzOTMx_size_16_color_FFFFFF_t_70]: /images/20230531/e238489d6f874540a3e4f23f84ba911e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjEzOTMx_size_16_color_FFFFFF_t_70 1]: /images/20230531/7b5c616e2cfa4b049fb27b2711169a1b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NjEzOTMx_size_16_color_FFFFFF_t_70 2]: /images/20230531/c130deaa884c4c218db065199519ec63.png