Found the answer on stack overflow. Some types on some runtimes (builtins and on Python 2) use another method __getslice__ instead of __getitem__. https://docs.python.org/2/reference/datamodel.html#object.__getslice__
czw., 15 mar 2018 o 12:54 użytkownik Arkadiusz Bulski <arek.bul...@gmail.com> napisał: > I have a custom class (a lazy list-like container) that needs to support > slicing. The __getitem__ checks if index is of slice type, and does a list > comprehension over individual integer indexes. The code works fine on > Python 3 but fails on 2.7, both CPython and PyPy. The print inside > __getitem__ doesnt even get executed when its a slice. Does 2.7 have > different object model, where slices are handled by a different method than > __getitem__? > > The implementation and error log > > https://github.com/construct/construct/blob/8839aac2b68c9e8240e9d9c041a196b0a7aa7d9b/construct/core.py#L4785-L4796 > > https://github.com/construct/construct/blob/8839aac2b68c9e8240e9d9c041a196b0a7aa7d9b/tests/test_core.py#L1148 > https://travis-ci.org/construct/construct/jobs/353782126#L887 > > -- > ~ Arkadiusz Bulski > -- ~ Arkadiusz Bulski -- https://mail.python.org/mailman/listinfo/python-list
