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pythonpython-packagingegg
Teddy C
Teddy C

Reputation: 1016

Python packaing - How is the python egg dir name like `myapp-0.2a40-py3.9-linux-x86_64.egg` generated?

I installed a python package My-App with python setup.py install and an egg directory My_App-0.2a40-py3.9-linux-x86_64.egg is created under my site-packages.

I looked up setuptools docs and source code and some PEPs trying to figure out how the egg dir name My_App-0.2a40-py3.9-linux-x86_64.egg is generated, but I didn't find anything relavent.

So how is the python egg dir name like My_App-0.2a40-py3.9-linux-x86_64.egg generated?

Upvotes: 0

Views: 141

Answers (1)

Teddy C
Teddy C

Reputation: 1016

The doc https://setuptools.pypa.io/en/latest/deprecated/python_eggs.html points out the functions used to construct the egg dir name.

The “name” and “version” should be escaped using the to_filename() function provided by pkg_resources, after first processing them with safe_name() and safe_version() respectively. These latter two functions can also be used to later “unescape” these parts of the filename. (For a detailed description of these transformations, please see the “Parsing Utilities” section of the pkg_resources manual.)

The “pyver” string is the Python major version, as found in the first 3 characters of sys.version. “required_platform” is essentially a distutils get_platform() string, but with enhancements to properly distinguish Mac OS versions. (See the get_build_platform() documentation in the “Platform Utilities” section of the pkg_resources manual for more details.)

Finally, the “ext” is either .egg or .egg-info, as appropriate for the egg’s format.

Upvotes: 1

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