1# lex_doc1.py 2# 3# Missing documentation string 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): 19 pass 20 21def t_error(t): 22 pass 23 24lex.lex() 25 26 27