有哪些好玩又实用的Python代码？

from PIL import Image
IMG = 'yangmingblog.cn.jpg' #设置图片文件
WIDTH = 150 #设置字符画的宽
HEIGHT = 80 #设置字符画的高
OUTPUT = 'output5.txt'  #设置存放字符画的文本文件
ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ")    #设置显示的字符集
def get_char(r,g,b,alpha = 256):
    if alpha == 0:
        return ' '
    length = len(ascii_char)
    gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)
    unit = (255.0 + 1)/length
    return ascii_char[int(gray/unit)]
if __name__ == '__main__':
    im = Image.open(IMG)
    im = im.resize((WIDTH,HEIGHT), Image.NEAREST)
    txt = ""
    for i in range(HEIGHT):
        for j in range(WIDTH):
            txt += get_char(*im.getpixel((j,i)))
        txt += '\n'
    print(txt)
    with open(OUTPUT,'w') as f:
        f.write(txt)

print('\n'.join([''.join([('lovelovelove'[(x-y)%12]if((x*0.05)**2+(y*0.1)**2-1)**3-(x*0.05)**2*(y*0.1)**3<=0 else' ')for x in range(-30,30)])for y in range(15,-15,-1)]))

print('\n'.join([' '.join(['%s*%s=%-2s' % (y, x, x * y) for y in range(1, x + 1)]) for x in range(1, 10)]))

print(*(i for i in range(2, 1000) if all(tuple(i%j for j in range(2, int(i**.5))))))  

print [x[0] for x in [  (a[i][0], a.append((a[i][1], a[i][0]+a[i][1]))) for a in ([[1,1]], ) for i in xrange(100) ]]

from MyQR import myqr
myqr.run(words='https://yangmingblog.cn',picture='Sources/gakki.gif',save_name='qr4.png',colorized=True)

from wordcloud import WordCloud
wc = WordCloud()    # 创建词云对象
wc.generate('weixin gongzhonghao CoderAdai yangmingblog.cn')    # 生成词云
wc.to_file('cy.png')    # 保存词云

import turtle
t = turtle.Pen()
for x in range(360):
    t.forward(x)
    t.left(59)