On 12 September 2016 at 09:05, Michel Desmoulin <desmoulinmic...@gmail.com> wrote:
> In the form of: > > val = do_thing() except ThingError: "default" > > [...] > > But it also can deal with many common operations in Python without the > need to add more operators or variants: > > val = my_list[0] except IndexError: "default" > > val = iterable[0] except TypeError: next(iter(iterable)) > > val = int(param) except ValueError: man.nan > I like this idea, I would propose a (maybe crazy) addition to it. What about a special exception NoneError, that will catch TypeError, AttributeError etc. but only when it was caused by None(), None.attr, None[1], etc. With this one can write: x = a.b()[0] except NoneError: 'default' without a risk of catching other (unrelated) exceptions. -- Ivan
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