remove unnecessary timing code, fix typo

lark/lexer.py

@@ -3,7 +3,6 @@
 from abc import abstractmethod, ABC
 import re
 from contextlib import suppress
-from time import time
 from typing import (
     TypeVar, Type, List, Dict, Iterator, Collection, Callable, Optional, FrozenSet, Any,
     Pattern as REPattern, ClassVar, TYPE_CHECKING, overload
@@ -28,7 +27,7 @@
 try:
     interegular
 except NameError:
-    interegular = interegular
+    interegular = None
 
 class Pattern(Serialize, ABC):
 
@@ -587,7 +586,6 @@ class ContextualLexer(Lexer):
     root_lexer: BasicLexer
 
     def __init__(self, conf: 'LexerConf', states: Dict[str, Collection[str]], always_accept: Collection[str]=()) -> None:
-        start_time = time()
         terminals = list(conf.terminals)
         terminals_by_name = conf.terminals_by_name
 
@@ -615,8 +613,6 @@ def __init__(self, conf: 'LexerConf', states: Dict[str, Collection[str]], always
 
         assert trad_conf.terminals is terminals
         self.root_lexer = BasicLexer(trad_conf, comparator)
-        end_time = time()
-        logger.debug("ContextualLexer init time: %s" % (end_time - start_time,))
 
     def lex(self, lexer_state: LexerState, parser_state: Any) -> Iterator[Token]:
         try:

tests/test_logger.py

@@ -46,7 +46,7 @@ def test_non_debug(self):
             Lark(collision_grammar, parser='lalr', debug=False)
         log = log.getvalue()
         # no log message
-        self.assertEqual(len(log), 0)
+        self.assertEqual(log, "")
 
     def test_loglevel_higher(self):
         logger.setLevel(logging.ERROR)