mayeut
4b19db8454
This drops python 3.7 for cibuildwheel. Building python 3.6 / 3.7 packages is still supported.
65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
from __future__ import annotations
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import ast
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import configparser
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import contextlib
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from pathlib import Path
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from ._compat import tomllib
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class Analyzer(ast.NodeVisitor):
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def __init__(self) -> None:
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self.requires_python: str | None = None
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def visit(self, node: ast.AST) -> None:
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for inner_node in ast.walk(node):
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for child in ast.iter_child_nodes(inner_node):
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child.parent = inner_node # type: ignore[attr-defined]
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super().visit(node)
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def visit_keyword(self, node: ast.keyword) -> None:
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self.generic_visit(node)
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# Must not be nested in an if or other structure
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# This will be Module -> Expr -> Call -> keyword
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if (
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node.arg == "python_requires"
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and not hasattr(node.parent.parent.parent, "parent") # type: ignore[attr-defined]
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and isinstance(node.value, ast.Constant)
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):
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self.requires_python = node.value.value
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def setup_py_python_requires(content: str) -> str | None:
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try:
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tree = ast.parse(content)
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analyzer = Analyzer()
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analyzer.visit(tree)
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return analyzer.requires_python or None
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except Exception: # pylint: disable=broad-except
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return None
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def get_requires_python_str(package_dir: Path) -> str | None:
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"""Return the python requires string from the most canonical source available, or None"""
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# Read in from pyproject.toml:project.requires-python
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with contextlib.suppress(FileNotFoundError):
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with (package_dir / "pyproject.toml").open("rb") as f1:
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info = tomllib.load(f1)
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with contextlib.suppress(KeyError, IndexError, TypeError):
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return str(info["project"]["requires-python"])
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# Read in from setup.cfg:options.python_requires
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config = configparser.ConfigParser()
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with contextlib.suppress(FileNotFoundError):
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config.read(package_dir / "setup.cfg")
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with contextlib.suppress(KeyError, IndexError, TypeError):
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return str(config["options"]["python_requires"])
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setup_py = package_dir / "setup.py"
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with contextlib.suppress(FileNotFoundError), setup_py.open(encoding="utf8") as f2:
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return setup_py_python_requires(f2.read())
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return None
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