Ben Feinstein <[email protected]> added the comment:
Here is a code that demonstrate the bug:
```python
import logging
class LogRecordTypeFilter(logging.Filter):
def __init__(self, cls):
self.cls = cls
def filter(self, record):
t = type(record)
if t is not self.cls:
msg = 'Unexpected LogRecord type %s, expected %s' % (t, self.cls)
raise TypeError(msg)
return True
class MyLogRecord(logging.LogRecord):
pass
manager = logging.Manager(None)
manager.setLogRecordFactory(MyLogRecord)
logger = manager.getLogger('some_logger')
logger.addFilter(LogRecordTypeFilter(MyLogRecord))
try:
logger.error('bpo-33057')
except TypeError as e:
print(e) # output: Unexpected LogRecord type <class 'logging.LogRecord'>,
expected <class '__main__.MyLogRecord'>
```
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Python tracker <[email protected]>
<https://bugs.python.org/issue33057>
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