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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_path(self, path, attribs=None, group=None):
 """Add a new path to the SVG."""


        # If not given a parent, assume that the path does not have a group
        if group is None:
            group = self.tree.getroot()

        # If given a list of strings (one or more), assume it represents
        # a sequence of nested group names
        elif all(isinstance(elem, str) for elem in group):
            group = self.get_or_add_group(group)

        elif not isinstance(group, Element):
            raise TypeError(
                'Must provide a list of strings or an xml.etree.Element '
                'object. Instead you provided {0}'.format(group))

        else:
            # Make sure that the group belongs to this Document object
            if not self.contains_group(group):
                warnings.warn('The requested group does not belong to '
                              'this Document')

        # TODO: It might be better to use duck-typing here with a try-except
        if isinstance(path, Path):
            path_svg = path.d()
        elif is_path_segment(path):
            path_svg = Path(path).d()
        elif isinstance(path, str):
            # Assume this is a valid d-string.
            # TODO: Should we sanity check the input string?
            path_svg = path
        else:
            raise TypeError(
                'Must provide a Path, a path segment type, or a valid '
                'SVG path d-string. Instead you provided {0}'.format(path))

        if attribs is None:
            attribs = {}
        else:
            attribs = attribs.copy()

        attribs['d'] = path_svg

        return SubElement(group, 'path', attribs)