PIP

Install Packages

• install GIT development code: pip install git+<https_git_clone_link>
• install GIT development code from branch: pip install git+<https_git_clone_link>@<branch_name>
• install editable local Projects:
  • pip install -e .
  • also see https://pip.pypa.io/en/stable/reference/pip_install/#editable-installs

List Packages

• list outdated packages: pip list -o
• list packages in requirements.txt format: pip list --format freeze

Other Commands

• delete package cache: pip cache purge

Install and update Packages from a File

For pip you can create so called requirements files. These files just list one package per line. Packages from this file can be installes with pip install -r <requirements.txt> and updatet with pip install -r <requirements.txt> -U. The update only makes sence when you do not specify a version number with the package.

Since pip does not support an “update all” mechanism this is a good way to install and update the needed packages.

To add a package from GIT just add git+<https_git_clone_link> instead of the normal package name.

Build PyPI Packages

• Python Packaging User Guide: https://packaging.python.org/
• Packaging Python Projects: https://packaging.python.org/tutorials/packaging-projects/
• Writing the Setup Script: https://docs.python.org/3.6/distutils/setupscript.html
• Classifiers: https://pypi.org/classifiers/
• PEP 440 - Version Identification and Dependency Specification: https://www.python.org/dev/peps/pep-0440/
• twine’s documentation: https://twine.readthedocs.io/en/latest/
• install_requires: https://setuptools.readthedocs.io/en/latest/setuptools.html?highlight=python_requires#declaring-dependencies
• python_requires: https://setuptools.readthedocs.io/en/latest/setuptools.html?highlight=python_requires#new-and-changed-setup-keywords
• setup.py Beispiele:
  • Tensorflow: https://github.com/tensorflow/tensorflow/blob/6729cd7d1c07e547298fa2a02d1e36390dc62f0a/tensorflow/tools/pip_package/setup.py
  • NumPy: https://github.com/numpy/numpy/blob/master/setup.py
  • pandas: https://github.com/pandas-dev/pandas/blob/master/setup.py
• Kurzanleitung pip Paket erstellen und zu PyPI hochladen: python3 setup.py sdist bdist_wheel - twine upload dist/*