Post
Pythonistas, have there been changes to the marshal library that could result in two identical dicts producing different marshaled output?
I was relying on an assumed property that dumps(a) == dumps(b), if a == b.
That appeared to have been true up an till Python3.14
Just to illustrate:
>>> from marshal import loads
>>> loads(b'{\xda\x03foo\xda\x03bar0')
{'foo': 'bar'}
>>> loads(b'\xfb\xda\x03foo\xda\x03bar0')
{'foo': 'bar'}
Have I been relying on a property of marshal that was never a guarantee?
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