[loggingTools] remove unused backport of LastResortLogger

we are not in the business of logging.

Lib/fontTools/misc/loggingTools.py

@@ -530,67 +530,6 @@ def deprecateFunction(msg, category=UserWarning):
 	return decorator
 
 
-class LastResortLogger(logging.Logger):
-	""" Adds support for 'lastResort' handler introduced in Python 3.2.
-	It allows to print messages to sys.stderr even when no explicit handler
-	was configured.
-	To enable it, you can do:
-
-		import logging
-		logging.lastResort = StderrHandler(logging.WARNING)
-		logging.setLoggerClass(LastResortLogger)
-	"""
-
-	def callHandlers(self, record):
-		# this is the same as Python 3.5's logging.Logger.callHandlers
-		c = self
-		found = 0
-		while c:
-			for hdlr in c.handlers:
-				found = found + 1
-				if record.levelno >= hdlr.level:
-					hdlr.handle(record)
-			if not c.propagate:
-				c = None  # break out
-			else:
-				c = c.parent
-		if found == 0:
-			if logging.lastResort:
-				if record.levelno >= logging.lastResort.level:
-					logging.lastResort.handle(record)
-			elif (
-				logging.raiseExceptions
-				and not self.manager.emittedNoHandlerWarning
-			):
-				sys.stderr.write(
-					"No handlers could be found for logger"
-					' "%s"\n' % self.name
-				)
-				self.manager.emittedNoHandlerWarning = True
-
-
-class StderrHandler(logging.StreamHandler):
-	""" This class is like a StreamHandler using sys.stderr, but always uses
-	whateve sys.stderr is currently set to rather than the value of
-	sys.stderr at handler construction time.
-	"""
-
-	def __init__(self, level=logging.NOTSET):
-		"""
-		Initialize the handler.
-		"""
-		logging.Handler.__init__(self, level)
-
-	@property
-	def stream(self):
-		# the try/execept avoids failures during interpreter shutdown, when
-		# globals are set to None
-		try:
-			return sys.stderr
-		except AttributeError:
-			return __import__("sys").stderr
-
-
 if __name__ == "__main__":
 	import doctest
 	sys.exit(doctest.testmod(optionflags=doctest.ELLIPSIS).failed)

Tests/misc/loggingTools_test.py

@@ -6,15 +6,11 @@ from fontTools.misc.loggingTools import (
     configLogger,
     ChannelsFilter,
     LogMixin,
-    StderrHandler,
-    LastResortLogger,
-    _resetExistingLoggers,
 )
 import logging
 import textwrap
 import time
 import re
-import sys
 import pytest
 
 
@@ -179,32 +175,3 @@ def test_LogMixin():
     assert isinstance(b.log, logging.Logger)
     assert a.log.name == "loggingTools_test.A"
     assert b.log.name == "loggingTools_test.B"
-
-
-@pytest.mark.skipif(sys.version_info[:2] > (2, 7), reason="only for python2.7")
-@pytest.mark.parametrize(
-    "reset", [True, False], ids=["reset", "no-reset"]
-)
-def test_LastResortLogger(reset, capsys, caplog):
-    current = logging.getLoggerClass()
-    msg = "The quick brown fox jumps over the lazy dog"
-    try:
-        if reset:
-            _resetExistingLoggers()
-        else:
-            caplog.set_level(logging.ERROR, logger="myCustomLogger")
-        logging.lastResort = StderrHandler(logging.WARNING)
-        logging.setLoggerClass(LastResortLogger)
-        logger = logging.getLogger("myCustomLogger")
-        logger.error(msg)
-    finally:
-        del logging.lastResort
-        logging.setLoggerClass(current)
-
-    captured = capsys.readouterr()
-    if reset:
-        assert msg in captured.err
-        msg not in caplog.text
-    else:
-        msg in caplog.text
-        msg not in captured.err