将一个文件中的内容复制到另一个文件中，用四行Python代码就能实现一个文件的复制，主要涉及Python对文件的读写操作。

with open('test.txt', 'r',encoding='utf-8') as fp1: with open('test[copy].txt', 'w',encoding='utf-8' ) as fp2: for line in fp1: fp2.write(line)