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All these `AttributeError`s weren't actually working, I get `KeyError`
instead:
```
Python 3.12.11 (main, Jun 3 2025, 15:41:47) [GCC 14.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import configparser
>>> conf = configparser.ConfigParser()
>>> conf['tv']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/nix/store/qlz1jypzdb320jp0ci0igxg2ghf0974d-python3-3.12.11/lib/python3.12/configparser.py", line 941, in __getitem__
raise KeyError(key)
KeyError: 'tv'
```
Perhaps this changed in some version of Python? I opted to write
explicit `if 'tv' in conf:` style guards instead. I would have used `conf.get('tv',
None)`, but the `ConfigParser` api unfortunately is not exactly like
python dicts.
I also fixed a confusing error that would happen if the given config
file did not exist. We'd initialize `conf` to `None`, and then go on to
crash trying to read attributes of the now-`None` `conf`. Now we log a
warning and carry on.
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All these
AttributeErrors weren't actually working, I getKeyErrorinstead:Perhaps this changed in some version of Python? I opted to write explicit
if 'tv' in conf:style guards instead. I would have usedconf.get('tv', None), but theConfigParserapi unfortunately is not exactly like python dicts.I also fixed a confusing error that would happen if the given config file did not exist. We'd initialize
conftoNone, and then go on to crash trying to read attributes of the now-Noneconf. Now we log a warning and carry on.