# 1. 获取用户要复制的文件名old_file_name = input("请输入要复制的文件名:")# 2. 打开要复制的文件old_file = open(old_file_name, "r")# test.py -----> test[复件].py# new_file_name = "[复件]"+old_file_nameposition = old_file_name.rfind(".")new_file_name = old_file_name[:position] + "[复件]" + old_file_name[position:]# 3. 新建一个文件# new_file = open("laowang.txt", "w")new_file = open(new_file_name, "w")# 4. 从旧文件中读取数据,并且写入到新文件中while True: content = old_file.read(1024) if len(content) == 0: break new_file.write(content)# 5. 关闭2个文件old_file.close()new_file.close()每次读取1024个字节
每次写入1024个字节