Function is_python_script

pex/executables.py:142–177

(
    path,  # type: Text
    check_executable=True,  # type: bool
)

def is_python_script(
    path,  # type: Text
    check_executable=True,  # type: bool
):
    # type: (...) -> bool

    path = os.path.realpath(path)
    if is_script(
        path,
        pattern=_PYTHON_SHEBANG_RE,
        check_executable=check_executable,
        extra_check=lambda shebang, fp: shebang == b"/bin/sh" and fp.read(13) == b"'''': pshprs\n",
    ):
        return True

    if WINDOWS:
        # Check for the style of console scripts we create.
        from pex import windows

        if windows.is_script(path):
            return True

        # Check for the style of console scripts Pip creates.
        if not zipfile.is_zipfile(path):
            return False

        from pex.ziputils import Zip

        zip_script = Zip.load(path)
        with open(os.devnull, "wb") as fp:
            shebang = zip_script.isolate_header(fp, stop_at=_SHEBANG_MAGIC)
            if shebang:
                if bool(re.match(_PYTHON_SHEBANG_RE, shebang[len(_SHEBANG_MAGIC) :].strip())):
                    return True

    return False