1# lex_rule3.py 2# 3# Rule function with incorrect number of arguments 4 5import sys 6if ".." not in sys.path: sys.path.insert(0,"..") 7 8import ply.lex as lex 9 10tokens = [ 11 "PLUS", 12 "MINUS", 13 "NUMBER", 14 ] 15 16t_PLUS = r'\+' 17t_MINUS = r'-' 18def t_NUMBER(t,s): 19 r'\d+' 20 return t 21 22def t_error(t): 23 pass 24 25lex.lex() 26 27 28