parameters: ()
docstring: Return an iterator over all lexer classes.
docstring_summary: Return an iterator over all lexer classes.
docstring_tokens: Return an iterator over all lexer classes .
function: def _iter_lexerclasses():
      """
      Return an iterator over all lexer classes.
      """
      for module_name, name, _, _, _ in LEXERS.itervalues():
          if name not in _lexer_cache:
              _load_lexers(module_name)
          yield _lexer_cache[name]
      for lexer in find_plugin_lexers():
          yield lexer
function_tokens: def _iter_lexerclasses ( ) : for module_name , name , _ , _ , _ in LEXERS . itervalues ( ) : if name not in _lexer_cache : _load_lexers ( module_name ) yield _lexer_cache [ name ] for lexer in find_plugin_lexers ( ) : yield lexer