Function _expand_shortcut

scripts/update_lib/cmd_quick.py:279–322

Expand simple name to cpython/Lib path if it exists. Examples: dataclasses -> cpython/Lib/dataclasses.py (if exists) json -> cpython/Lib/json/ (if exists) test_types -> cpython/Lib/test/test_types.py (if exists) regrtest -> cpython/Lib/test/libregrtest (from DEPE

(path: pathlib.Path)

def _expand_shortcut(path: pathlib.Path) -> pathlib.Path:
    """Expand simple name to cpython/Lib path if it exists.

    Examples:
        dataclasses -> cpython/Lib/dataclasses.py (if exists)
        json -> cpython/Lib/json/ (if exists)
        test_types -> cpython/Lib/test/test_types.py (if exists)
        regrtest -> cpython/Lib/test/libregrtest (from DEPENDENCIES)
    """
    # Only expand if it's a simple name (no path separators) and doesn't exist
    if "/" in str(path) or path.exists():
        return path

    name = str(path)

    # Check DEPENDENCIES table for path overrides (e.g., regrtest)
    from update_lib.deps import DEPENDENCIES

    if name in DEPENDENCIES and "lib" in DEPENDENCIES[name]:
        lib_paths = DEPENDENCIES[name]["lib"]
        if lib_paths:
            override_path = construct_lib_path("cpython", lib_paths[0])
            if override_path.exists():
                return override_path

    # Test shortcut: test_foo -> cpython/Lib/test/test_foo
    if name.startswith("test_"):
        resolved = resolve_module_path(f"test/{name}", "cpython", prefer="dir")
        if resolved.exists():
            return resolved

    # Library shortcut: foo -> cpython/Lib/foo
    resolved = resolve_module_path(name, "cpython", prefer="file")
    if resolved.exists():
        return resolved

    # Extension module shortcut: winreg -> cpython/Lib/test/test_winreg
    # For C/Rust extension modules that have no Python source but have tests
    resolved = resolve_module_path(f"test/test_{name}", "cpython", prefer="dir")
    if resolved.exists():
        return resolved

    # Return original (will likely fail later with a clear error)
    return path


def main(argv: list[str] | None = None) -> int: