bpo-32339: Make csv.DictReader returning regular dict instead of OrderedDict. by shangdahao · Pull Request #4904 · python/cpython (original) (raw)

Normally, we would have a deprecation period before switching the return type. Potentially, this patch could break existing code that relied on methods like move_to_end() which are present in OrderedDict() but not in dict().

That said, I think such code is either unlikely or rare, so it would be net less disruptive for users to just go forward with this patch.

Since this would be a break from our usual policies, you would need to get the support of other core-devs before this patch could be applied.