# lex_state_norule.py # # Declaration of a state for which no rules are defined import ply.lex as lex tokens = [ "PLUS", "MINUS", "NUMBER", ] states = (('comment', 'exclusive'), ('example', 'exclusive')) t_PLUS = r'\+' t_MINUS = r'-' t_NUMBER = r'\d+' # Comments def t_comment(t): r'/\*' t.lexer.begin('comment') print("Entering comment state") def t_comment_body_part(t): r'(.|\n)*\*/' print("comment body %s" % t) t.lexer.begin('INITIAL') def t_error(t): pass lex.lex()