hasattr on Language instance attribute raises KeyError #3160
Closed
Description
hasattr doesnt work correctly, as failure to resolve it should raise AttributeError
>>> from coalib.bearlib.languages.Language import Language
>>> l = Language['C#']
>>> l.extensions
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File ".../coalib/bearlib/languages/Language.py", line 342, in __getattr__
return self._attributes[item]
KeyError: 'extensions'
>>> hasattr(l, 'extensions')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File ".../coalib/bearlib/languages/Language.py", line 342, in __getattr__
return self._attributes[item]
KeyError: 'extensions'To be backwards compatible, a new exception class is needed, that subclasses both KeyError and AttributeError.
This was released in 0.9, so fixing this is still a minor bug. Nobody will be relying on this bad behaviour in production yet.