Python文件复制，备份，搜索

#文件的复制'''def copy():    source = input("请输入文件位置：")    target = input("请输入要复制文件的位置：")    old_file = open(source, "br")    new_file = open(target, "bw")    content = old_file.read()    new_file.write(content)    old_file.close()    new_file.close()copy()''''''#复制传递大文件def copy():    source = input("请输入文件名：")    target = input("请输入储存位置：")    old_file = open(source, "br")f:    new_file = open(target, "bw")    while True:        content = old_file.read(1024 * 1024)        if content:      #if  content   content不为空 开始复制，为空结束            new_file.write(content)        else:            print("文件复制完成！")            break    old_file.close()    new_file.close()copy()'''#加备份'''def back_file():    file_name = input("请输入与您要备份的文件名称：")    # new_name = input("亲输入备份名称：")    # 获取文件的后缀名称    sep = file_name.rindex("/")    dir = file_name[:sep + 1]    name = file_name[sep + 1:]    new_file_name = dir + "[备份]" + name    old_file = open(file_name, "br")    new_file = open(new_file_name, "bw")    with open(file_name, "br") as f:        while True:            content = old_file.read(1024 * 1024)            if content:  # if  content   content不为空 开始复制，为空结束                new_file_name.write(content)            else:                print("文件复制完成！")                break        old_file.close()        new_file.close()#程序入口back_file()'''#查询指定目录下的搜有文件"""import osdef list_file(path):    child_file = os.listdir(path)    for file in child_file:        if os.path.isfile(path + "/" + file):            print("这是一个文件：%s" % file)        else:            print("   %s" % (path + "/" + file))            list_file(path + "/" + file)list_file("F:\代码\.metadata")"""#指定目录下搜索文件import osimport sysdef search(path, word):    for filename in os.listdir(path):        fp = os.path.join(path, filename)        if os.path.isfile(fp) and word in filename:            print(fp)        elif os.path.isdir(fp):            search(fp, word)search("F:\软件测试","14云计算")#前为搜索的位置，后为要搜索的文件的部分信息