Zipping files in multiple directories / FileNotFoundError: [Errno 2] No such file or directory

Question

我有一个文件夹结构，其中有我的根文件夹，然后根文件夹中有 3 个其他文件夹。

Root_folder
|
|- Folder1
   |- file1.txt
   |- file2.txt
|- Folder2
   |- file3.txt
   |- file4.jpg
|- Folder3
   |- file5.txt

我正在尝试通过三个文件夹中的每一个将我的脚本运行并计算每个文件夹中文件的存在时间。这工作正常，但是我的 zip 函数有问题。

我收到一条错误消息，指出没有这样的文件或目录。如果我在调用 zip_file 之前添加 print(file)，我将得到 file4.jpg

的输出

import os 
import time
import gzip

root_directory = ('C:/Users/Path/Desktop/To_Files/')

folders = ['inbox', 'outbox']

retention_age_days = {
    '.txt':100,
    '.jpg':200,
    }

zip_extension = ('.jpg') 

files_to_zip = []

def zip_file():

    for file in files_to_zip:
        fp = open(file, "rb")
        data = fp.read()
        bindata = bytearray(data)
        with gzip.open(file + ".gz", "wb") as f:
            f.write(bindata)
        return


for folder in folders:
    os.path.join(str((root_directory, folder)))
    files = [f for f in os.listdir(folder) if f.endswith(tuple(retention_age_days.keys()))]

    for file in files:
        time_created = os.stat(folder).st_ctime
        now = time.time()
        file_age_seconds = now - time_created # file age in seconds
        file_age_days = (now - time_created) / 86400 # 1 day = 86400 seconds
        ending = "." + file.split(".")[-1]
        if ending in retention_age_days:
            # deletion statments should go in here, replacing print statements
            if file_age_days > retention_age_days[ending]:
                print(file, file_age_days, "file is older than retention days")
            elif file_age_days <= retention_age_days[ending] and file.endswith(zip_extension):
                files_to_zip.append(file)
                zip_file()
            elif file_age_days <= retention_age_days[ending]:
                print(file, file_age_days, "file is not older than retention days")

我不确定发生了什么。当我 print(os.getcwd()) 甚至在 for folder in folders 循环中我不断得到一个输出说我的 cwd 是 (C:/Users/Path/Desktop/To_Files/') ```

如果能帮助修复我的 zip 功能，我们将不胜感激！

编辑：完整回溯：

Traceback (most recent call last):
  File "C:/Users/Path/Desktop/To_Files/file.py", line 50, in <module>
    zip_file()
  File "C:/Users/Path/Desktop/To_Files/file.py", line 24, in zip_file
    fp = open(file, "rb")
FileNotFoundError: [Errno 2] No such file or directory: 'jpg_test.jpg'

Answer 1

os.listdir() 仅给出文件夹中的文件名，但要打开文件，您需要完整路径 - folder/filename 因此您必须在

中使用 os.path.join(folder, f)

 extensions = tuple(retention_age_days.keys())
 files = [os.path.join(folder, f) 
            for f in os.listdir(folder) 
               if f.endswith(extensions)]

顺便说一句：在下一个循环中你一次又一次地得到 stat() for folder

 time_created = os.stat(folder).st_ctime

也许你的意思是 file 而不是 folder

 time_created = os.stat(file).st_ctime

In zip_file() 如果你在 for-loop 中使用 return 那么它会在第一个文件后退出。您可以跳过 return。但是您可以将列表作为参数发送 def zip_file(files_to_zip):

Zipping files in multiple directories / FileNotFoundError: [Errno 2] No such file or directory

Zipping files in multiple directories / FileNotFoundError: [Errno 2] No such file or directory

python

gzip