directory structure

├── libs
│   ├── module1_src
│   │   ├── namespace
│   │   └── pyproject.toml
│   ├── module2_src
│   │   ├── namespace
│   │   └── pyproject.toml
│   ├── module3_src
│   │   ├── namespace
│   │   └── pyproject.toml
│   └── namespace_src
│       ├── namespace
│       └── pyproject.toml
├── main.py
├── poetry.lock
├── pyproject.toml
└── src
    ├── myapp
    │   └── __init__.py
    └── myapp_web
        └── __init__.py

16 directories, 9 files

pyproject.toml

[tool.poetry]
name = "111ns"
version = "0.1.0"
description = ""
authors = ["alex.oleshkevich <alex.oleshkevich@gmail.com>"]
packages = [
    {include = "myapp", from = "./src/"},
    {include = "myapp_web", from = "./src/"}
]

[tool.poetry.dependencies]
python = "^3.8"
"namespace.module1" = {path = "libs/module1_src", develop = true}
"namespace.module2" = {path = "libs/module2_src", develop = true}
"namespace.module3" = {path = "libs/module3_src", develop = true}
"namespace" = {path = "libs/namespace_src"}

[tool.poetry.dev-dependencies]

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

pyproject.toml of each namespace package

[tool.poetry]
name = "namespace.module1"
version = "0.1.0"
description = "Next generation python web framework."
authors = ["Alex Oleshkevich <alex.oleshkevich@gmail.com>"]
license = "MIT"
packages = [
    {include = "namespace"}
]


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

python shell

> poetry run python

Python 3.8.6 (default, Dec 13 2020, 15:35:55)
[GCC 10.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import namespace.module1
/tmp/111ns/.venv/lib/python3.8/site-packages/namespace/__init__.py
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'namespace.module1'