ashb commented on issue #14924:
URL: https://github.com/apache/airflow/issues/14924#issuecomment-912562519
So I _think_ that the file handler will be closed by the GC finalizer (and
since Python uses both ref counting and a period GC to detect loops) assigning
`self.handler` to something else should GC the old handler and old FH.
_Should_. But it is entirely possible that the logging framework might have
another reference to it somewhere hanging around.
```
In [2]: x = {'y': open("/etc/passwd")}
```
```
lrwx------ ash ash 64 B Fri Sep 3 14:48:12 2021 0 ⇒ /dev/pts/3
lr-x------ ash ash 64 B Fri Sep 3 14:49:06 2021 12 ⇒ /etc/passwd
```
```
x['y'] = open("/etc/group")
```
```
lrwx------ ash ash 64 B Fri Sep 3 14:48:12 2021 0 ⇒ /dev/pts/3
lr-x------ ash ash 64 B Fri Sep 3 14:49:26 2021 13 ⇒ /etc/group
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