rdf_utils.py 文件源码

def string_to_literal(string, to_uri=True):
    """
    Creates a literal or URI object from a given string.
    :param string: String to convert from
    :param to_uri: Whether to try convert to an URI if not a valid literal is given.
    :return: Literal object or URI object (if failed to create a literal and desired) or else input string.
    """
    if "^^http://www.w3.org/2001/XMLSchema#" in string:
        try:
            value, datatype = string.split("^^")
            return Literal(value, datatype=datatype)
        except:
            loginfo("Could not deliteralize string.")
            return Literal(string)
    else:
        loginfo("not a literal")
        return URIRef(string) if to_uri else string