this post was submitted on 17 Jul 2023
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ModuleNotFoundError when installing a package with entry points using pipx (self.python)
submitted 1 year ago* (last edited 1 year ago) by breadcrumb to c/[email protected]
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I'm writing a python package that I would like to distribute as a standalone terminal app. The structure of the project folder is the following:

energy-monitor/
-- config/
-- doc/
-- tests/
-- energymonitor/
---- init.py -> (empty)
---- main.py -> def main()
---- data/
---- ..other packages..
-- project.toml

I'm using setuptools to generate a .tar.gz archive, some relevant parts of the project.toml file are:

[build-system]
requires = ["setuptools>=68.0"]
build-backend = "setuptools.build_meta"

[project]
name = "energy-monitor"
version = "0.0.1"

...

[tool.setuptools.packages.find]
where = ["energymonitor"]

[tool.setuptools.package-data]
data = ["data/*"]

[project.scripts]
energy-monitor = "energymonitor.main:main"

I generate the .tar.gz and the .whl files with the command python -m build, then I run pipx install path/to/energy-monitor.tar.gz. The installation is succesful, but when calling energy-monitor from the command line I get:

Traceback (most recent call last):
  File "/home/mattia/.local/bin/energy-monitor", line 5, in <module>
    from energymonitor.main import main
ModuleNotFoundError: No module named 'energymonitor'

Why is this happening? I was not able to find any helpful solution online. It's the first that I build a python package so sorry if the issue is trivial.

  • python version: 3.11.3
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[โ€“] breadcrumb 2 points 1 year ago* (last edited 1 year ago)

Yeah sorry I expressed myself wrongly, I mean that it looked like pipx didn't install the package in the dedicated venv, and that was actually the case because I didn't specify which packages to install in the pyproject.toml file apparently. I substituted these lines:

[tool.setuptools.packages.find]
where = ["energymonitor"]

[tool.setuptools.package-data]
data = ["data/*"]

with these lines:

[tool.setuptools]
packages = ["energymonitor"]
include-package-data = true

and it worked!