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# lex_error3.py # # t_error defined as function, but with wrong # args 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'-' t_NUMBER = r'\d+' def t_error(): pass lex.lex()