文件备份问题

为什么运行之后只能在文件夹中显示文件备份结果，但是python结果界面中没有显示print中的各种提示语，比如开始备份，备份完成之类的？

应该如何使其显示？

慕桂英6320947 2022-03-12

源自：面向对象的应用(异常处理、文件备份) 4-2 实战文件备份（优化）

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1回答

好帮手慕凡 2022-03-12 11:13:19

同学，你好！

正常是可以显示的，同学可以将代码复制提交一下，老师这边运行一下，更好为同学解决问题，祝学习愉快~

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提问者慕桂英6320947 #1

os
os.path

Backup():
    (srcdist):
        .src = src
        .dist = dist
    ():
        ls = os.listdir(.src)
        (ls)
        i ls:
            .back_files(i)

    (file_name):
        os.path.exists(.dist):
            os.makedirs(.dist)
            ()
        full_src_path = os.path.join(.srcfile_name)
        full_dist_path = os.path.join(.distfile_name)
        os.path.isfile(full_src_path) os.path.splitext(full_src_path)[-].lower() ==:
            (full_src_path)
        (full_dist_path=) f_dist:
                (.format(file_name))
                (full_src_path=) f_src:
                    :
                        rest = f_src.read()
                        rest:
                            f_dist.write(rest)
                    f_dist.flush()
                (.format(file_name))
        :
            ()



__name__ == :
    base_path = os.path.dirname(os.path.abspath(__file__))
    src_path = os.path.join(base_path)
    dist_path = os.path.join(base_path)
    bak = Backup(src_pathdist_path)

2022-03-14 09:49:31

提问者慕桂英6320947 #2

import os
import os.path

class Backup(object):
    def __init__(self,src,dist):
        self.src = src
        self.dist = dist
    def read_files(self):
        """
        读取scr目录下的所有文件
        :param self:
        :return:
        """
        ls = os.listdir(self.src)
        print(ls)
        for i in ls:
            self.back_files(i)

    def back_files(self,file_name):
        """
        处理备份
        """
        #1.判断dist是否存在，如果不存在，要创建这个目录
        if not os.path.exists(self.dist):
            os.makedirs(self.dist)
            print("指定的目录不存在，创建完成")
        #2.判断文件是否为我们要备份的文件
        #拼接完整路径
        full_src_path = os.path.join(self.src,file_name)
        full_dist_path = os.path.join(self.dist,file_name)
        #首先判断是否为文件，然后借助于文件的后缀名进行判断
        if os.path.isfile(full_src_path) and os.path.splitext(full_src_path)[-1].lower() ==".txt":
            print(full_src_path)
        #3.读取文件内容
            with open(full_dist_path,"w",encoding="utf-8") as f_dist:
                print("<<开始备份[{0}]".format(file_name))
                with open(full_src_path,"r",encoding="utf-8") as f_src:
                    while True:
                        rest = f_src.read(100)
                        if not rest:
                            break
                        f_dist.write(rest)
                    f_dist.flush()
                print("<<<[{0}]备份完成".format(file_name))
        #4.把读取到的内容写入到新的文件中
        else:
            print("文件类型不符合备份要求，跳过<<")



if __name__ == "__main__":
    base_path = os.path.dirname(os.path.abspath(__file__))
    #print(base_path)
    src_path = os.path.join(base_path,"src")
    #print(src_path)
    dist_path = os.path.join(base_path,"dist")
    #print(dist_path)
    bak = Backup(src_path,dist_path)

2022-03-14 09:51:37