On Wed, 30 May 2018 23:05:53 +1000, Chris Angelico wrote: > You can always change the *values*, but not the *order* of the keys.
Okay, so far we have these operations which are allowed: - changing a value associated with a key and these operations which all raise RuntimeError with the "mutated" error message: - changing the position of a key; - deleting a key (using either del or popitem); - adding a new key; - deleting a key and adding it back again; - deleting a key and adding a new key. This is the only thing I've found so far that gives the "changed size" error message: - clearing the dictionary with d.clear() Phew! I was starting to think Frank was imagining it, and that the "changed size" test was dead code :-) -- Steven D'Aprano "Ever since I learned about confirmation bias, I've been seeing it everywhere." -- Jon Ronson -- https://mail.python.org/mailman/listinfo/python-list
