paython3-练习

在文本每行末尾加;

f = open(r'D:\test1\1.txt','rb')
w = open(r'D:\test1\2.txt','wb')

for line in f.readlines():
         w.writelines(line.replace('\r\n',';\r\n'))
w.close()

 更好的写法

f = open(r'D:\test1\1.txt','rb')
w = open(r'D:\test1\2.txt','wb')
import os
with f as lines:
    with w as outfile:
        for line in lines:
            line = '"' + line.replace(os.linesep, "") + '",' + os.linesep
            outfile.write(line)

 

 

类似写法

f = open(r'D:\test1\1.txt','rb')
w = open(r'D:\test1\2.txt','wb')

for line in f.readlines():
         line = '"'+ line.replace('\r\n',"") + '";\r\n'
         w.writelines(line)
f.close()
w.close()