lex_re2.exp (284B)
1lex: Regular expression for rule 't_PLUS' matches empty string. 2Traceback (most recent call last): 3 File "./lex_re2.py", line 25, in ? 4 lex.lex() 5 File "../ply/lex.py", line 758, in lex 6 raise SyntaxError,"lex: Unable to build lexer." 7SyntaxError: lex: Unable to build lexer.