问“`ModuleNotFoundError:没有模块名”后为软件包安装

EN

.
└──  my_pkg
    ├── Dockerfile
    ├── pyproject.toml
    └── my_pkg
        ├── __init__.py
        └── app.py

[tool.poetry]
name = "my_pkg"
version = "0.1.0"
description = "My Package"

[tool.poetry.dependencies]
python = ">=3.8,<3.11"
...

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

%  poetry install
Installing dependencies from lock file

Package operations: 70 installs, 4 updates, 0 removals

   • Installing pyasn1 (0.4.8)
   • Installing cachetools (4.2.4)
   • Updating charset-normalizer (2.0.9 -> 2.0.8)
   • Installing frozenlist (1.2.0)
   • Installing multidict (5.2.0)
...


Installing the current project: my_pkg (0.1.0)

$ python
Python 3.9.9 (main, Dec  3 2021, 01:42:21) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import my_pkg
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'my_pkg'

$ find /usr/local -name my_pkg\*
/usr/local/lib/python3.9/site-packages/my_pkg.pth
/usr/local/lib/python3.9/site-packages/my_pkg-0.1.0.dist-info
$ ls -la /usr/local/lib/python3.9/site-packages/my_pkg-0.1.0.dist-info
total 32
drwxr-xr-x 2 root root  4096 Dec  8 15:32 .
drwxr-xr-x 1 root root 12288 Dec  8 15:32 ..
-rw-r--r-- 1 root root     6 Dec  8 15:32 INSTALLER
-rw-r--r-- 1 root root  1535 Dec  8 15:32 METADATA
-rw-r--r-- 1 root root   454 Dec  8 15:32 RECORD
$ cat /usr/local/lib/python3.9/site-packages/my_pkg.pth 
/app/my_pkg
$ pip freeze | grep my_pkg
my_pkg==0.1.0

Building my_pkg (0.1.0)
  - Building sdist
  - Built my_pkg-0.1.0.tar.gz
  - Building wheel
  - Built my_pkg-0.1.0-py3-none-any.whl
Processing ./dist/my_pkg-0.1.0-py3-none-any.whl
...

$ python
Python 3.9.9 (main, Dec  3 2021, 01:42:21) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import my_pkg
>>>