CODEWITHSUNDEEP
pythonpip
Javi Torre
Javi Torre

Reputation: 824

Requirements.txt vs automatically install dependencies

I have a test python project which requires specific versions of pandas, numpy and pyyaml. I have specified them in my setup.py file like this:

install_requires=[
    'numpy==1.21.5',
    'pandas==1.3.5',
    'PyYAML==6.0'
],

However, when installing the library with the command

 pip install -i https://test.pypi.org/simple/ dummydf

I would expect pip to automatically install those pinned versions. However, it does not do it. What would be the way of installing those dependencies?

EDIT: for example, if I install paramiko, I don't have to manually install any requirements.txt file. That's what I mean with my library.

EDIT2: this is what shows for me after trying to build the dist and wheel for the project having requirements.txt

(venv) PS C:\Users\u339990\learning_scripts\my_python_project\hola> pip install -i https://test.pypi.org/simple/ dummydf
Looking in indexes: https://test.pypi.org/simple/
Collecting dummydf
  Downloading https://test-files.pythonhosted.org/packages/a6/70/66df4bd4f0506745508a5a3ceb2fd72e2efdf26949d1bc6e6efc47819c9c/dummydf-0.0.6-py3-none-any.whl (6.3 kB)
  Downloading https://test-files.pythonhosted.org/packages/69/39/7a8a4757b2b198ea88478005d0ca6ff4f66e5d1544713ad327b76e7e8628/dummydf-0.0.5-py3-none-any.whl (6.3 kB)
  Downloading https://test-files.pythonhosted.org/packages/1b/0b/ae35d181a56c65699f25cd7b159706cac03c585530a1580df78c54d746ed/dummydf-0.0.4-py3-none-any.whl (6.3 kB)
  Downloading https://test-files.pythonhosted.org/packages/6a/0c/458d226ba99724a72db3275ddbc36278fe373c2dac4cb69463673ea630b2/dummydf-0.0.3-py3-none-any.whl (5.9 kB)
  Downloading https://test-files.pythonhosted.org/packages/12/78/5de1985bc5b2e5c72a383e9ee659e6fcac8cfc2e59c356c0c7561acd84fa/dummydf-0.0.2-py3-none-any.whl (5.9 kB)
  Downloading https://test-files.pythonhosted.org/packages/90/39/b00805590de570fb7aaaac46e991660b29660dd75052cb2507ab5cb08241/dummydf-0.0.1-py3-none-any.whl (5.8 kB)
ERROR: Cannot install dummydf==0.0.1, dummydf==0.0.2, dummydf==0.0.3, dummydf==0.0.4, dummydf==0.0.5 and dummydf==0.0.6 because these package versions have conflicting dependencies.

The conflict is caused by:
    dummydf 0.0.6 depends on numpy==1.21.5
    dummydf 0.0.5 depends on numpy==1.21.5
    dummydf 0.0.4 depends on numpy==1.21.5
    dummydf 0.0.3 depends on numpy==1.21.5
    dummydf 0.0.2 depends on numpy==1.21.5
    dummydf 0.0.1 depends on numpy==1.21.5

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/user_guide/#fixing-conflicting-dependencies

Upvotes: 2

Views: 1895

Answers (1)

Silvio Mayolo
Silvio Mayolo

Reputation: 70267

To use a requirements.txt file, specify it with the -r command line argument.

pip install -r requirements.txt

Upvotes: 1

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