Where does py_modules go in pyproject.toml (setuptools)

Question

Where does the py_modules parameter (I don't know what it is called) go in a pyproject.toml file?

[project]
name = "elements"
version = "1.0.0" 
description = "Magic"
readme = "README.md"
requires-python = ">=3.10"

license = {file = "LICENSE"}
authors = [
  {name = "x"},
  {name = "y"}
]

maintainers = [
  {name = "x"},
  {name = "y"}
]

[project.scripts]
stuff = "stuff:__init__"


[tool.setuptools]
packages = ["baseclasses", "elements"]
# this raises error. 
py_modules = ["__init__"]

[build-system]
requires = ["setuptools>=43.0.0", "wheel"]
build-backend = "setuptools.build_meta"

My project structure looks like this:

.
├── .gitignore
├── LICENSE
├── README.md
├── __init__.py
├── baseclasses
│   ├── __init__.py
│   ├── bunch_of_py_files.py
├── elements
│   ├── __init__.py
│   ├── bunch_of_py_files.py
├── pyproject.toml

I have tried to put it under the project section and the tool.setuptools section, but both raised the project must not contain {'py_modules'} properties error.

I was looking through setuptools and pip docs, but the only thing I could find was for setup.py files, which I read was being deprecated and as such didn't want to use.

Answer 1

I was able to find the solution here

[tool.setuptools]
packages = ["baseclasses", "elements"]
py-modules = ["__init__"] # dash, not underscore