实验6 turtle绘图与python库应用编程体验

实验任务一

task1-1:

源代码：

 1 from turtle import *
 2 
 3 def move(x,y):
 4     penup()
 5     goto(x,y)
 6     pendown()
 7 
 8 def draw(n,size = 100):
 9     for i in range(n):
10         fd(size)
11         left(360/n)
12 
13 def main():
14     pensize(2)
15     pencolor('red')
16 
17     move(-200,0)
18     draw(3)
19 
20     move(0,0)
21     draw(4)
22 
23     move(200,0)
24     draw(5)
25 
26     hideturtle()
27     done()
28 
29 main()

运行结果：

 

task1-2:

源代码：

 1 from turtle import *
 2 
 3 def moveto(x,y):
 4     penup()
 5     goto(x,y)
 6     pendown()
 7 
 8 def main():
 9     pensize(2)
10     pencolor('blue')
11 
12     moveto(-150,0)
13     circle(50)
14 
15     moveto(0,0)
16     circle(50,steps=4)
17 
18     moveto(150,0)
19     circle(50,steps=5)
20 
21     moveto(300,0)
22     circle(50,steps=6)
23 
24     hideturtle()
25     done()
26 
27 main()

运行结果：

 

实验任务二

task2-1:

源代码：

 1 from turtle import *
 2 
 3 def moveto(x,y):
 4     penup()
 5     goto(x,y)
 6     pendown()
 7 
 8 def main():
 9     setup(800,600)
10 
11     radius = 20
12     offset = 20
13 
14     for i in range(9):
15         moveto(0,-radius)
16         circle(radius)
17         radius += offset
18 
19     hideturtle()
20     done()
21 
22 main()

运行结果：

 

task2-2:

源代码：

 1 from turtle import *
 2 from random import random
 3 
 4 def moveto(x,y):
 5     penup()
 6     goto(x,y)
 7     pendown()
 8 
 9 def gen_color():
10     return tuple(random() for i in range(3))
11 
12 def main():
13     setup(800,600)
14 
15     radius = 180
16     offset = 20
17 
18     for i in range(8):
19         moveto(0,-radius)
20         color(gen_color())
21 
22         begin_fill()
23         circle(radius)
24         end_fill()
25 
26         radius -= offset
27 
28     hideturtle()
29     done()
30 
31 main()

运行结果：

 

实验任务三

task3-1:

源代码：

 1 from turtle import *
 2 
 3 def square(size = 50, rgb = 'pink'):
 4     pencolor(rgb)
 5     for i in range(4):
 6         fd(size)
 7         left(90)
 8 
 9 def main():
10     setup(800,600)
11     speed(0)
12 
13 
14     n = 10
15     for i in range(n):
16         square(80)
17         left(360/n)
18 
19     hideturtle()
20     done()
21 
22 main()

运行结果：

 

task3-2:

源代码：

 1 from turtle import *
 2 
 3 setup(800,600)
 4 pencolor('pink')
 5 
 6 n = 10
 7 for i in range(10):
 8     for j in range(2):
 9         circle(80,90)
10         left(90)
11 
12     right(360/n)
13 
14 hideturtle()
15 done()

运行结果：

 

实验任务四

task4-1:

源代码：

 1 from turtle import *
 2 
 3 setup(800,600)
 4 bgcolor('black')
 5 pencolor('white')
 6 speed(0)
 7 
 8 angle = 0
 9 size = 2
10 
11 n = 5
12 count = 50
13 for i in range(count):
14     fd(size)
15     angle += 360/n
16     seth(angle)
17     size += 5
18 
19 hideturtle()
20 done()

运行结果：

 

实验任务五

task5-1:

源代码：

 1 from turtle import *
 2 import math
 3 
 4 setup(800,600)
 5 def moveto(x,y):
 6     penup()
 7     goto(x,y)
 8     pendown()
 9 
10 n = 4
11 moveto(-100,-100)
12 color('black')
13 begin_fill()
14 for i in range(n):
15     fd(200)
16     left(360/n)
17 end_fill()
18 
19 moveto(0,-100)
20 color('red')
21 begin_fill()
22 for i in range(n):
23     left(360/n/2)
24     fd(100*math.sqrt(2))
25     left(360/n/2)
26 end_fill()
27 
28 hideturtle()
29 done()

运行结果：

 

task5-2:

源代码：

 1 from turtle import *
 2 
 3 setup(800,600)
 4 
 5 pencolor('blue')
 6 pensize(2)
 7 
 8 n=5
 9 radius = 40
10 offset = 20
11 for i in range(5):
12     if i == 0:
13         goto(radius,0)
14         left(90)
15         circle(radius,extent=90)
16         goto(0,0)
17     else:
18         goto(radius,0)
19         right(90)
20         circle(radius,extent=90)
21         goto(0,0)
22 
23     radius += offset
24 
25 hideturtle()
26 done()

运行结果：

 

实验任务六

task6-1：

源代码：

 1 from turtle import *
 2 from random import random
 3 
 4 setup(800,600)
 5 
 6 def fillcolor():
 7     return tuple(random() for i in range(3))
 8 
 9 def moveto(x,y):
10     penup()
11     goto(x,y)
12     pendown()
13 
14 def rect(c,k):
15     for i in range(4):
16         if i in [0,2]:
17             fd(k)
18             left(360/4)
19         else:
20             fd(c)
21             left(360/4)
22 
23 def main():
24     for j in range(20):
25         c,k = 100,30
26         x_lst = [i for i in range(-300,301,30)]
27         y = 0
28 
29         color(fillcolor())
30         begin_fill()
31         moveto(x_lst[j],y)
32         rect(c,k)
33         end_fill()
34 
35     hideturtle()
36     done()
37 
38 main()

 

运行结果：

 

 

task6-2：

源代码：

 1 from turtle import *
 2 
 3 bgcolor('black')
 4 setup(800,600)
 5 
 6 def moveto(x,y):
 7     penup()
 8     goto(x,y)
 9     pendown()
10 
11 radius = 150
12 color('yellow')
13 begin_fill()
14 moveto(radius/2**0.5,radius/2**0.5)
15 left(135)
16 circle(radius,extent=360-90)
17 end_fill()
18 
19 radius1 = 15
20 color('black')
21 begin_fill()
22 moveto(0,radius/2)
23 circle(radius1)
24 end_fill()
25 
26 radius2 = 5
27 color('white')
28 begin_fill()
29 moveto(-radius1,radius/2)
30 circle(radius2)
31 end_fill()
32 
33 hideturtle()
34 done()

 

运行结果：

 

 

实验任务七

task7:

源代码：

 1 from matplotlib import pyplot as plt
 2 
 3 def func(x):
 4     return 4*x*(1-x)
 5 
 6 def gen_lst(x,n):
 7     ans = []
 8     for i in range(n):
 9         t = func(x)
10         ans.append(t)
11         x = t
12     return ans
13 
14 def main():
15     n = 30
16 
17     lst1 = gen_lst(0.2,n)
18     lst2 = gen_lst(0.2000001,n)
19 
20     x = list(range(1,31))
21     plt.plot(x,lst1,'ro-',x,lst2,'bs-')
22     plt.xticks(list(range(1,31,4)))
23     plt.legend(['x = 0.2','x = 0.2000001'])
24     plt.show()
25 
26 main()
task7

 

运行结果：

 

 

实验任务八

task8:

源代码：

 1 import jieba
 2 from wordcloud import WordCloud
 3 from matplotlib import pyplot as plt
 4 
 5 text = '''requests是一个常用的HTTP请求库，可以方便地向网站发送HTTP请求，并获取响应结
 6 果。
 7 Scrapy是一个开源和协作框架，用于从网站中提取数据，是最流行的爬虫框架。
 8 SciPy是一个开源的Python算法库和数学工具包，它基于Numpy，用于数学、科学、工程学等领
 9 域。'''
10 
11 word = jieba.lcut(text)
12 
13 t = ' '.join(word)
14 t_wc = WordCloud(font_path = 'msyh.ttc').generate(t)
15 
16 t_wc.to_file('wordcloud.png')
17 
18 plt.imshow(t_wc)
19 plt.axis('off')
20 plt.show()
task8

 

运行结果：

 

posted on 2023-06-06 02:14  DTong  阅读(10)  评论(0)  编辑  收藏  举报

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