Mark Shannon <m...@hotpy.org> added the comment:
I agree with Mark about slice hashing. This looks like a deliberate design decision. x[:] = [] should empty a sequence, not set the key-value pair (slice(None, None, None), []) in a mapping. However, code-objects can still be hashable even if slices are not. By leaving slices unhashable, and accounting for their presence in code.__hash__, we get both the performance improvement and full backwards compatibility. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue42454> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
