2023年6月5日【实验6】吴曦远202283820011

from turtle import *
def move(x, y):

    penup()
    goto(x, y)
    pendown()

def draw(n, size = 100):

    for i in range(n):
        fd(size)
        left(360/n)
def main():
    pensize(10)
    pencolor('blue')
    hideturtle()
    move(-200, 0)
    draw(3)
    move(0, 0)
    draw(4)
    move(200, 0)
    draw(5)
    hideturtle()
    done()
main()

from turtle import *
def moveto(x, y):

    penup()
    goto(x, y)
    pendown()
def main():
    pensize(2)
    pencolor('blue')
    moveto(-150, 0)
    circle(50)
    moveto(0, 0)
    circle(50, steps = 4)
    moveto(150, 0)
    circle(50, steps = 5)
    moveto(300, 0)
    circle(50, steps = 6)
    hideturtle()
    done()
main()

from turtle import *
from random import random
def moveto (x,y):
    penup()
    goto(x,y)
    pendown()
def gen_color():
    return tuple((random() for i in range(3)))
def main():
    setup(800,600)
    speed(0)
    hideturtle()
    radius = 180
    offset = 20
    for i in range(9):
        moveto(0,-radius)
        color(gen_color())
        begin_fill()
        circle(radius)
        end_fill()
        radius -= offset

    done()
main()

from turtle import *
def square(size = 50, rgb = 'orange'):
    pencolor(rgb)
    k = 4
    for i in range(k):
        fd(size)
        left(360/k)
def main():
    setup(800,600)
    speed(0)
    hideturtle()
    n = 10
    for i in range(n):
        square(80)
        left(360/n)

    done()
main()

output:

code:

from turtle import *
setup(800,800)    #setup window's size
pencolor('pink')
n = 10
speed(0)
for i in range (n):
    for j in range(2):
        circle(80,90)
        left(90)
    right(360/n)
hideturtle()
done()

output:

code:

from turtle import *
setup(800,600)
bgcolor('black')
pencolor('white')
speed(0)

angle = 0
size = 2
k = 0
n = 5
count = 50
for i in range(count):
    fd(size)
    angle += 360/n + k
    seth(angle)
    size += 5
hideturtle()
done()

output:

code:

from turtle import *
import math
setup(700,700)
def square(size = 50, rgb = 'black'):
    pencolor(rgb)
    k = 4
    for i in range(k):
        fd(size)
        left(360/k)
def moveto(x,y):
    penup()
    goto(x,y)
    pendown()
def main_1():
    speed(0)
    moveto(-100,-100)
    color('black')
    begin_fill()
    square(200)
    end_fill()
    hideturtle()
def main_2():
    speed(0)
    moveto(0,-100)
    color('red')
    begin_fill()
    left(45)
    square(100*math.sqrt(2))
    end_fill()
    done()

main_1()
main_2()

output:

code:

from turtle import *
setup(400, 400)
def moveto(x,y):
    penup()
    goto(x,y)
    pendown()

def main():
    color('blue')
    pensize(3)
    n = 20
    radium = 40
    speed(0)

    for i in range(1):
        moveto(n,0)
        left(90)
        circle(radium, 90)
        radium += 20
        n += 20
    for i in range(4):
        moveto(n, 0)
        left(-90)
        circle(radium, 90)
        radium += 20
        n += 20
    left(90)
    fd(radium-20)
    left(90)
    fd(radium-20)
    hideturtle()
    done()
main()

output:

task6_1.py
code:

from turtle import *
from random import random
setup(800,600)
def moveto (x,y):
    penup()
    goto(x,y)
    pendown()
def gen_color():
    return tuple((random() for i in range(3)))
def square(size = 50, rgb = 'black'):
    k = 4
    for i in range(k):
        fd(size)
        left(360/k)
def main() :
    speed(0)
    n = 20
    moveto(0,0)
    for i in range (20):
        k = gen_color()
        color(k)
        pencolor(k)
        begin_fill()
        square(20)
        end_fill()
        moveto(n,0)
        n+=20
    hideturtle()
    done()
main()

output:

task7_1.py
code:

from matplotlib import pyplot as plt
def func(x):
    return 4*x*(1-x)

def gen_list(x,n):
    ans = []
    for i in range(n):
        t = func(x)
        ans.append(t)
        x = t
    return ans

def main():
    n = 30

    lst1 = gen_list(0.2,n)
    lst2 = gen_list(0.2000001,n)

    x = list(range(1,31))
    plt.plot(x, lst1, 'ro-', x, lst2, 'bs-')  # 绘制折线图
    plt.xticks(list(range(1, 31, 4)))  # 设置x轴刻度
    plt.legend(['x = 0.2', 'x = 0.2000001'])  # 设置图例
    plt.show()
main()

output:

task8_1.py
code:

import jieba
from wordcloud import WordCloud # 从wordcloud模块导入词云类WordCloud
from matplotlib import pyplot as plt
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
果。
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。
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
域。'''
word = jieba.lcut(text) # 使用jieba模块的函数lcut()对中文文本进行精确分词
t = ' '.join(word)
t_wc = WordCloud(font_path = 'msyh.ttc').generate(t) # 创建WordCloud对象，使用其方法generate()生成词云
t_wc.to_file('wordcloud.png') # 保存词云图片
plt.imshow(t_wc) # 在屏幕上显示词云
plt.axis('off')
plt.show()

output: