(attrs)
extract numbering from list element attributes
extract numbering from list element attributes
extract numbering from list element attributes
def list_numbering_start(attrs):
    """extract numbering from list element attributes"""
    if 'start' in attrs:
        return int(attrs['start']) - 1
    else:
        return 0
def list_numbering_start ( attrs ) : if 'start' in attrs : return int ( attrs [ 'start' ] ) - 1 else : return 0