2018-03-15 12:54 GMT+01:00 Arkadiusz Bulski <arek.bul...@gmail.com>: > 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 > -- > https://mail.python.org/mailman/listinfo/python-list
Hi, it looks like, the older method __getslice__ is still used in python 2.7 cf.: https://docs.python.org/2/reference/datamodel.html#object.__getslice__ You might need to implement this method in your class as well for compatibility with python 2. regards vbr -- https://mail.python.org/mailman/listinfo/python-list
