On Tue, Sep 18, 2018, 10:12 AM Jeroen Demeyer <j.deme...@ugent.be> wrote:
> On 2018-09-17 15:44, Robert Bradshaw wrote: > > One of the pain points in Cython is that one must explicitly annotate > > non-object returning functions with except clauses. Would it be worth > > trying to change the default here, making exception-suppressing opt-in > > rather than opt-out? > > Just to clarify things: are you proposing that the default would be > "except *"? > We may choose an implicit default exception value. An alternative would be to give *warnings* for functions where > exceptions could occur but could not be propagated. For example, this > function is totally fine: > > cdef int foo(int x): > return x > > but this function would give a warning: > > cdef int foo(x): > return x # implicit conversion Python -> int > Given that essentially every Python operation can raise exceptions, I don't know how useful this warning would be. Unless we expect everyone to change their code. and this should probably be a compile-time error: > > cdef int foo(x): > raise NotImplementedError > > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > https://mail.python.org/mailman/listinfo/cython-devel >
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