文件操作

fr = open('。。。。。。。',mode='r', encoding='utf-8')
plainText = fr.read()
print('明文:'+plainText)
print('密文:',end='')

for c in plainText:
    print(chr(ord(c)+3),end='')

 

name1='香蕉'
name2='葡萄'
classmates=['榴莲','西j瓜','橘bb子',1]
print(name1,classmates[-1],len(classmates))
classmates.append('哈密瓜')
classmates.insert(1,'桃子')
print(classmates)
classmates.pop()
classmates.pop(1)
classmates[1]='水蜜桃'
print(classmates)

import turtle
turtle. speed(10)
colors = ['#FFA54F','#FF83FA','#FF3030','#EEEE00','#B23AEE','#A1A1A1','#87CEFF']

for i in range(200):
    turtle.pencolor(colors[i% 6])
    turtle.forward(i)
    turtle.left(59)
turtle.done()