Getting Python package distribution version from within a package

Question

You can get the version of a python distribution using

import pkg_resources
pkg_resources.get_distribution(\"distro\").version

This is grea

Answer 1

If you're looking for a solution that works both from your development—not installed, or just locally called—version, and an installed version, then try this solution.

Imports:

import ast
import csv
import inspect
from os import listdir, path

import pkg_resources

Utility function:

def get_first_setup_py(cur_dir):
    if 'setup.py' in listdir(cur_dir):
        return path.join(cur_dir, 'setup.py')
    prev_dir = cur_dir
    cur_dir = path.realpath(path.dirname(cur_dir))
    if prev_dir == cur_dir:
        raise StopIteration()
    return get_first_setup_py(cur_dir)

Now using Python's ast library:

def parse_package_name_from_setup_py(setup_py_file_name):
    with open(setup_py_file_name, 'rt') as f:
        parsed_setup_py = ast.parse(f.read(), 'setup.py')

    # Assumes you have an `if __name__ == '__main__':`, and that it's at the end:
    main_body = next(sym for sym in parsed_setup_py.body[::-1]
                     if isinstance(sym, ast.If)).body

    setup_call = next(sym.value
                      for sym in main_body[::-1]
                      if isinstance(sym, ast.Expr) and
                      isinstance(sym.value, ast.Call) and
                      sym.value.func.id in frozenset(('setup',
                                                      'distutils.core.setup',
                                                      'setuptools.setup')))

    package_version = next(keyword
                           for keyword in setup_call.keywords
                           if keyword.arg == 'version'
                           and isinstance(keyword.value, ast.Name))

    # Return the raw string if it is one
    if isinstance(package_version.value, ast.Str):
        return package_version.s

    # Otherwise it's a variable at the top of the `if __name__ == '__main__'` block
    elif isinstance(package_version.value, ast.Name):
        return next(sym.value.s
                    for sym in main_body
                    if isinstance(sym, ast.Assign)
                    and isinstance(sym.value, ast.Str)
                    and any(target.id == package_version.value.id
                            for target in sym.targets)
                    )

    else:
        raise NotImplemented('Package version extraction only built for raw strings and '
                             'variables in the same function that setup() is called')

Finally replace the function in @Gricey's answer by changing return "development" to:

return parse_package_name_from_setup_py(get_first_setup_py(path.dirname(__file__)))

Taken from my answer https://stackoverflow.com/a/60352386