Python 以逻辑方式获取自己的pyproject.toml依赖项

发布于03月27日

我使用一个pyproject.toml文件来列出包的依赖项:

[build-system]
requires = ["setuptools"]
build-backend = "setuptools.build_meta"

[project]
name = "foobar"
version = "1.0"
requires-python = ">=3.8"
dependencies = [
  "requests>=2.0",
  "numpy",
  "tomli;python_version<'3.11'",
]

从包内部，是否可以以字符串的形式获取它自己的依赖项列表？在上述情况下，它应该给

["requests", "numpy"]

如果使用Python = 3.11，和>

["requests", "numpy", "tomli"]

否则.

推荐答案

以下几点应该可以做到这一点:

import importlib.metadata
import packaging.requirements

def _get_dependencies(name):
    rd = metadata(name).get_all('Requires-Dist')
    deps = []
    for req in rd:
        req = packaging.requirements.Requirement(req)
        if req.marker is not None and not req.marker.evaluate():
            continue
        deps.append(req.name)
    return deps

一百零一: