shutil copyfile在我的目标文件夹上出现错误2

Question

我编写了如下函数：

def separate_files(filetree_list, destination):

    from shutil import copyfile
    from os import makedirs
    from os.path import join, exists, commonprefix
    
    try:
        for file in filetree_list:
            dst = join(destination,
                       '\\'.join(file.split(commonprefix(filetree_list))[1].split('\\')[0:-1]))
            if not exists(dst):
                print(dst, " doesn`t exist. Creating...")
                makedirs(dst)
                print(exists(dst), ". Path created.")
            print(file)
            copyfile(file, dst)
    except:
        print("Moving files has FAILED.")
    else:
        print("Moving files was SUCCESSFUL.")

当我使用“filetree\u list”列表调用它时，该列表包含一个元素和使用os.path.join准备的目标：

filetree_list = ['C:\\Users\\<username>\\staging_folder\\folder_1\\filename.xlsx'] 
destination = os.path.join(staging_dir, 'Sorted', 'Unwanted_files')

我得到以下错误：

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-29-c3525a60c859> in <module>()
     14         print(exists(dst), ". Path created.")
     15     print(file)
---> 16     copyfile(file, dst)

    C:\ProgramData\Anaconda3\lib\shutil.py in copyfile(src, dst, follow_symlinks)
    119     else:
    120         with open(src, 'rb') as fsrc:
--> 121             with open(dst, 'wb') as fdst:
    122                 copyfileobj(fsrc, fdst)
    123     return dst

FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\<username>\\staging_folder\\Sorted\\Unwanted_files\\'

奇怪的是，这个文件夹确实存在，并且是由独立文件功能中的“if not exists（dst）”块创建的，我甚至可以在Windows资源管理器中看到它

雪上加霜的是，当我使用同一个目标参数但列表中有多个字符串运行此函数时，它执行了我所期望的操作，并且没有错误

有人能洞察我在这里做错了什么吗

Answer 1

https://docs.python.org/3/library/shutil.html#shutil.copyfile：

shutil.copyfile(src, dst, *, follow_symlinks=True)

Copy the contents (no metadata) of the file named src to a file named dst and return dst. src and dst are path names given as strings. dst must be the complete target file name; look at shutil.copy() for a copy that accepts a target directory path.

您正试图将目录作为dst传递给copyfile。那不行