python 文件操作，清空文件内容、复制文件内容、移动文件、删除文件

import os
import shutil


class File:
    # 清空文件内容
    def clear(self, filename):
        try:
            with open(filename, mode='w') as file:  # 以写模式，打卡文件
                file.truncate()  # 清空文件内容
                print("文件内容已清空")
        except Exception as e:
            print(e)

    # 复制文件内容至新文件
    def copy(self, filename, new_filename):
        try:
            with open(filename, mode='r') as file:  # 以读模式打开文件
                data = file.read()  # 读取文件内容

            with open(new_filename, mode='w+') as file_new:  # 以写模式，打开新文件
                file_new.writelines(data)  # 把内容写入新文件中
        except Exception as e:
            print(e)

    # 移动文件至新目录中
    def move(self, filename, new_filename):
        shutil.move(filename, new_filename)  # 移动文件

    # 删除文件
    def delete(self, filename):
        os.remove(filename)
        print("文件已删除")


# File().clear('abc.txt')
# File().delete('abc.txt')
File().copy('abc.txt', 'new_abc.txt')
# File().move('abc.txt', '/Users/sally/PycharmProjects/pythonProject/exercise/abc/abc.txt')