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I am trying to use the modules I am developing like a package using python -m pip install -e . - I ran this command inside the package directory where setup.py is at the root of the directory.

I am getting the same error using python -m pip install git+https://github.com/user/repo_name.git@main

Here is the github repo I am trying to make it into a python package: repo_link

This is my first time working on creating a python package. I followed online documentations to do all of this.

Error

ERROR: Exception:
Traceback (most recent call last):
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\cli\base_command.py", line 180, in exc_logging_wrapper
    status = run_func(*args)
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\cli\req_command.py", line 245, in wrapper
    return func(self, options, args)
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\commands\install.py", line 377, in run
    requirement_set = resolver.resolve(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 76, in resolve
    collected = self.factory.collect_root_requirements(root_reqs)
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 534, in collect_root_requirements
    reqs = list(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 490, in _make_requirements_from_install_req
    cand = self._make_base_candidate_from_link(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py", line 207, in _make_base_candidate_from_link
    self._editable_candidate_cache[link] = EditableCandidate(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 315, in __init__
    super().__init__(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 156, in __init__
    self.dist = self._prepare()
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 222, in _prepare
    dist = self._prepare_distribution()
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py", line 325, in _prepare_distribution
    return self._factory.preparer.prepare_editable_requirement(self._ireq)
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\operations\prepare.py", line 696, in prepare_editable_requirement
    dist = _get_prepared_distribution(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\operations\prepare.py", line 71, in _get_prepared_distribution
    abstract_dist.prepare_distribution_metadata(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\distributions\sdist.py", line 37, in prepare_distribution_metadata
    self.req.load_pyproject_toml()
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\req\req_install.py", line 516, in load_pyproject_toml
    pyproject_toml_data = load_pyproject_toml(
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_internal\pyproject.py", line 64, in load_pyproject_toml
    pp_toml = tomli.loads(f.read())
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_vendor\tomli\_parser.py", line 102, in loads
    pos = key_value_rule(src, pos, out, header, parse_float)
  File "D:\AnacondaFinal\anacondaInstall\envs\test_env\lib\site-packages\pip\_vendor\tomli\_parser.py", line 349, in key_value_rule
    raise suffixed_err(src, pos, "Cannot overwrite a value")
pip._vendor.tomli.TOMLDecodeError: Cannot overwrite a value (at line 13, column 21)

Here is the structure of package - FOO

  • Initial_codes (contains jupyter notebooks)
  • Quantum_Simulations (jupyter notebooks)
  • src/Package_name
    • __init__.py
    • Module1.py
    • Module2.py
    • Module3.py
  • Tutorial Notebooks (jupyter notebooks and py file)
  • citation.cff
  • setup.py
  • setup.cfg
  • requirements_for_pip.txt
  • requirements_conda.txt
  • LICENSE
  • pyproject.toml
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9
  • Did you examine what requirements.txt normally is in other packages? For example, Pandas. Yours doesn't look correct. You don't want everything in there. You want to probably start with a minimum and then limit what is needed as it is in various situations. Also the convention is is environment.yml for conda. I don't know if it works with .txt as a list and not yaml. Did you follow a tutorial? Your title needs to be specific to your issue and not general. For example, if you use a repo that was set up correctly, does it work? If so, then your ... Commented Sep 5, 2024 at 12:08
  • <continued> title is a false statement. Read and use How do I ask a good question?. It has a section on writing a title. Commented Sep 5, 2024 at 12:12
  • Never seen this error before. -- I tried to reproduce the issue but couldn't, for it installed fine without any problem at all. Commented Sep 5, 2024 at 18:55
  • @sinoroc I think this error was from the pyproject.toml file. I had some variables repeated in different parts of the file. I used [toml-lint.com/](toml_verification) for checking the errors in the toml file. After correcting these errors, it was fine. Commented Sep 6, 2024 at 9:06
  • @Wayne I used pip3 freeze > requirements.txt to get the requirements.txt file. Is it necessary to provide dependencies in toml file? For my package, I only need numpy, scipy and matplotlib - all of their versions must be compatible with Python. Commented Sep 6, 2024 at 9:11

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"TOMLDecodeError: Cannot overwrite a value" - I got this error since I had defined certain variables in different parts of the .toml file several times. I had some issues with improper closing/opening brackets too. However, this error got resolved once I corrected these issues. I used toml verification to debug the .toml file.

Also, setup.py or setup.cfg is not required for publishing the software package on PyPi.

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