On 13.10.2020 03:51, jmwar...@gmail.com wrote: > Of course, again, looking at the requests code shows just how much > boilerplate these things take up. The base class RequestException has some > code in it but then there are 22 derived exceptions. So many classes defined > just to give a name to an exception and none of them have special parameters > guaranteed in the exception that might help you better handle what happened.
Exception classes are often built using inheritance to allow for grouping certain error conditions, e.g. you can catch the RequestException if you want to catch most exceptions raised by the requests package. It's common for more complex packages to come with such a (class) hierarchy and allows for applications using those packages to narrow down their error handling without requiring a deep understanding of the internals of the package. Regarding passing in more context to an exception object: How you design this is really up to you. Because exceptions are regular Python classes you can add methods to them, interpret their arguments in special ways and even put exception resolving code directly into the class. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Experts (#1, Oct 13 2020) >>> Python Projects, Coaching and Support ... https://www.egenix.com/ >>> Python Product Development ... https://consulting.egenix.com/ ________________________________________________________________________ ::: We implement business ideas - efficiently in both time and costs ::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 https://www.egenix.com/company/contact/ https://www.malemburg.com/ _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/QYKFZHP64NDGIVMNK3GW7F6MYYFI2CSV/ Code of Conduct: http://python.org/psf/codeofconduct/
