asyncio: Remove unused Future._tb_logger attribute (#4596)
It was only used on Python 3.3, now only Future._log_traceback is
used.
diff --git a/Lib/asyncio/futures.py b/Lib/asyncio/futures.py
index 472f2a8..b2e57ef 100644
--- a/Lib/asyncio/futures.py
+++ b/Lib/asyncio/futures.py
@@ -63,8 +63,7 @@
# `yield Future()` (incorrect).
_asyncio_future_blocking = False
- _log_traceback = False # Used for Python 3.4 and later
- _tb_logger = None # Used for Python 3.3 only
+ _log_traceback = False
def __init__(self, *, loop=None):
"""Initialize the future.
@@ -156,9 +155,6 @@
if self._state != _FINISHED:
raise InvalidStateError('Result is not ready.')
self._log_traceback = False
- if self._tb_logger is not None:
- self._tb_logger.clear()
- self._tb_logger = None
if self._exception is not None:
raise self._exception
return self._result
@@ -176,9 +172,6 @@
if self._state != _FINISHED:
raise InvalidStateError('Exception is not set.')
self._log_traceback = False
- if self._tb_logger is not None:
- self._tb_logger.clear()
- self._tb_logger = None
return self._exception
def add_done_callback(self, fn):