按照Towhee官网的快速入门照着写的代码，出现一系列Traceback (most recent call last):错误

出错的原因类似如下

>>> from pathlib import Path
>>> path = Path('D:/')
>>> ' ' in path
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: argument of type 'WindowsPath' is not iterable

在 Python 3.7 的 subprocess 库中, 当 arg 为 WindowsPath 就会出错.

def list2cmdline(seq):
    ...
    for arg in seq:
    ...
        needquote = (" " in arg) or ("\t" in arg) or not arg

seq = ['git', 'clone', '-b', 'main', 'https://towhee.io/towhee/image-embedding-resnet50.git',
    WindowsPath('C:/Users/Jason/.towhee/pipelines/towhee/image_embedding_resnet50/main')]
list2cmdline(seq)

从 Python 3.8 以后, 每个 arg 都先经 os.fsdecode 函数处理后, 就不会出错了.

fsdecode(filename)

Decode filename (an os.PathLike, bytes, or str) from the filesystem encoding with ‘surrogateescape’ error handler, return str unchanged. On Windows, use ‘strict’ error handler if the file system encoding is ‘mbcs’ (which is the default encoding).

def list2cmdline(seq):
...
    for arg in map(os.fsdecode, seq):
...
        needquote = (" " in arg) or ("\t" in arg) or not arg

seq = ['git', 'clone', '-b', 'main', 'https://towhee.io/towhee/image-embedding-resnet50.git',
    WindowsPath('C:/Users/Jason/.towhee/pipelines/towhee/image_embedding_resnet50/main')]
list2cmdline(seq)

安装的是 3.8.10 或 3.9.9, 都确认 OK.