def __init__()

in xar/py_util.py [0:0]

• 34 lines of code
• 11 McCabe index (conditional complexity)

    def __init__(self, distribution=None, location=None, importer=None):
        """
        Constructs the WheelDistribution
        """
        if distribution is not None and location is not None:
            raise self.Error("location and distribution cannot both be set")

        if distribution is not None:
            self.distribution = distribution
        else:
            # Construct the metadata provider
            if self.is_wheel_archive(location):
                importer = importer or zipimport.zipimporter(location)
                metadata = WheelMetadata(importer)
            else:
                root = os.path.dirname(location)
                metadata = pkg_resources.PathMetadata(root, location)
            project_name, version, py_version, platform = [None] * 4
            match = self.WHEEL_INFO_RE(os.path.basename(metadata.egg_info))
            if match:
                project_name, version, py_version, platform = match.group(
                    "name", "ver", "pyver", "plat"
                )
                py_version = py_version or sys.version_info[0]
            self.distribution = pkg_resources.DistInfoDistribution(
                location,
                metadata,
                project_name=project_name,
                version=version,
                py_version=py_version,
                platform=platform,
            )
        # self.distribution.egg_info is the only reliable way to get the name.
        # I'm not sure if egg_info is a public interface, but we already rely
        # on it for WheelMetadata.
        wheel_info = os.path.basename(self.distribution.egg_info)
        parsed_filename = self.WHEEL_INFO_RE(wheel_info)
        if parsed_filename is None:
            raise self.Error("Bad wheel '%s'" % wheel_info)
        self.name, self.ver, self.namever = parsed_filename.group(
            "name", "ver", "namever"
        )