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Changes between Version 2 and Version 3 of Ticket #35399, comment 4

v2	v3
3	3	In other words `int.__hash__` is pretty fast but `Expression.__hash__` isn't and you need to perform an implicit one to gather values in `defaultdict(list)`. Since `bulk_update` support both expressions and literal assignment the benchmark must be run against both to be representative.
4	4
5		Try running them with assignments of `F("scans_in") + Value(random.randint(0, m), output_field=InterField())` instead and you should see a slowdown.
	5	Try running them with assignments of `F("scans_in") + Value(random.randint(0, m), output_field=IntegerField())` instead and you should see a slowdown.
6	6
7	7	The need for _hashability_ also poses another problem. What should be done with values that are not hashable such as `JSONField` assignment of `dict`s?