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文件操作

时间:2018-05-30 22:28:20      阅读:219      评论:0      收藏:0      [点我收藏+]
fr = open(letter.txt, mode=r, encoding=utf-8)
plaincode = fr.read()
print(明文:+ plaincode)

print(密文:,end=‘‘)
for c in plaincode:
    print(chr(ord(c)+3),end=‘‘)

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fr = open(letter.txt, mode=r, encoding=utf-8)
plaincode = fr.read()
fr.close()

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

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fr = open(a_letter.txt, mode=r, encoding=utf-8)
plaincode = fr.read()
fr.close()

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

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import turtle
colors= [#B03060,#9B30FF,#CD6889,#8470FF,#DB7093,#EE5C42]
turtle.speed(10)
for i in range(150):
    turtle.pencolor(colors[i% 6])
    turtle.forward(i)
    turtle.left(59)
turtle.done()

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classmates = [Micheel,Bob,Tracy]
#print(len(classmates))
#print(classmates[1])

classmates.append(Tom)
classmates.insert(1, Jack)

classmates.pop()
classmates.pop(1)

classmates[1] = Sarah
print(classmates)

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文件操作

原文:https://www.cnblogs.com/12j-x/p/9113718.html

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