lex: Invalid regular expression for rule 't_NUMBER'. unbalanced parenthesis | |
Traceback (most recent call last): | |
File "./lex_re1.py", line 25, in <module> | |
lex.lex() | |
File "../ply/lex.py", line 759, in lex | |
raise SyntaxError,"lex: Unable to build lexer." | |
SyntaxError: lex: Unable to build lexer. |