1# lex_token4.py
2#
3# Bad token name
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    "-",
14    "NUMBER",
15    ]
16
17t_PLUS = r'\+'
18t_MINUS = r'-'
19t_NUMBER = r'\d+'
20
21def t_error(t):
22    pass
23
24lex.lex()
25
26
27