代码改变世界

文件操作，列表实例NiceHexSpiral

2018-05-30 20:53  陈俊宇A  阅读(193)  评论(0)    收藏  举报 
import turtle
turtle. speed(10)
colors = ['purple','yellow','red','green','blue','orange']

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

fr=open('letter.txt',mode='r',encoding='utf-8')
plaincode=fr.read()
print('明文:'+plaincode)

print('密文:',end='')
fr.close

fw=open('c-letter.txt',mode='a',encoding='utf-8')
for c in plaincode:
    print(chr(ord(c)+3),end='')
    fw.write(chr(ord(c)+3))