@yielder<EOL>def flag_housenumber(token):
if token.is_first and token.isdigit():<EOL><INDENT>token.kind = '<STR_LIT>'<EOL><DEDENT>return token<EOL>
Very basic housenumber flagging. Make your own for your specific needs.
    Eg. in addok-france:
    https://github.com/addok/addok-france/blob/master/addok_france/utils.py#L106