def __init__(self, lines=None, ordered=False, start=None, attribs=None):
if lines:<EOL><INDENT>self.lines = lines<EOL><DEDENT>else:<EOL><INDENT>self.lines = []<EOL><DEDENT>self.ordered = ordered<EOL>self.start = start<EOL>if attribs:<EOL><INDENT>self.attribs = attribs<EOL><DEDENT>else:<EOL><INDENT>self.attribs = {}<EOL><DEDENT>
List constructor