文件操作

name1 = 'gaga'
name2 = 'katherine'
classmates = ['gaga','katherine','lily','luckly']
classmates.append('coco')
classmates.insert(1,'cole')
classmates.pop()
classmates.pop(4)
classmates[0] = 'jingyi'

print(len(classmates),classmates)

 

name1 = 'gaga'
name2 = 'katherine'
classmates = ['gaga','katherine','lily','luckly']
classmates.append('coco')
classmates.insert(1,'cole')
classmates.pop()
classmates.pop(4)

print(len(classmates),classmates)

 

name1 = 'gaga'
name2 = 'katherine'
classmates = ['gaga','katherine','lily','luckly']
classmates.append('coco')
classmates.insert(1,'cole')
classmates.pop()

print(len(classmates),classmates)

 

name1 = 'gaga'
name2 = 'katherine'
classmates = ['gaga','katherine','lily','luckly']
classmates.append('coco')
classmates.insert(1,'cole')

print(len(classmates),classmates)

 

name1 = 'gaga'
name2 = 'katherine'
classmates = ['gaga','katherine','lily','luckly']
classmates.append('coco')

print(len(classmates),classmates)

 

 

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

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

fr.close()
fw.close()

 

 

 

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

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

fr.close()
fw.close()