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How to use locate_via_pep514 method in tox

Best Python code snippet using tox_python

__init__.py

Source:__init__.py

...11    if spec.name is not None and CURRENT.satisfies(spec):12        return CURRENT.path13    # second check if the py.exe has it (only for non path specs)14    if spec.path is None:15        py_exe = locate_via_pep514(spec)16        if py_exe is not None:17            return py_exe18    # third check if the literal base python is on PATH19    candidates = [envconfig.basepython]20    # fourth check if the name is on PATH21    if spec.name is not None and spec.name != base_python:22        candidates.append(spec.name)23    # or check known locations24    if spec.major is not None and spec.minor is not None:25        if spec.name == "python":26            # The standard names are in predictable places.27            candidates.append(r"c:\python{}{}\python.exe".format(spec.major, spec.minor))28    return check_with_path(candidates, spec)29_PY_AVAILABLE = []30_PY_LOCK = Lock()31def locate_via_pep514(spec):32    with _PY_LOCK:33        if not _PY_AVAILABLE:34            from . import pep51435            _PY_AVAILABLE.extend(pep514.discover_pythons())36            _PY_AVAILABLE.append(CURRENT)37    for cur_spec in _PY_AVAILABLE:38        if cur_spec.satisfies(spec):...

test_windows.py

Source:test_windows.py

1from tox._pytestplugin import mark_dont_run_on_posix2@mark_dont_run_on_posix3def test_locate_via_pep514(monkeypatch):4    import tox.interpreters.windows5    from tox.interpreters.py_spec import CURRENT6    del tox.interpreters.windows._PY_AVAILABLE[:]7    exe = tox.interpreters.windows.locate_via_pep514(CURRENT)8    assert exe9    assert len(tox.interpreters.windows._PY_AVAILABLE)10    import tox.interpreters.windows.pep51411    def raise_on_call():12        raise RuntimeError()13    monkeypatch.setattr(tox.interpreters.windows.pep514, "discover_pythons", raise_on_call)...

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