lex_rule2.py

# lex_rule2.py
#
# Rule function with incorrect number of arguments

import sys
if ".." not in sys.path: sys.path.insert(0,"..")

import ply.lex as lex

tokens = [
    "PLUS",
    "MINUS",
    "NUMBER",
    ]

t_PLUS = r'\+'
t_MINUS = r'-'
def t_NUMBER():
    r'\d+'
    return t

def t_error(t):
    pass



lex.lex()