On 2021-11-19 21:11, Marco Sulla wrote:
(venv_3_10) marco@buzz:~$ python
Python 3.10.0 (heads/3.10-dirty:f6e8b80d20, Nov 18 2021, 19:16:18)
[GCC 10.1.1 20200718] on linux
Type "help", "copyright", "credits" or "license" for more information.
a = frozenset((3, 4))
a
frozenset({3, 4})
a |= {5,}
a
frozenset({3, 4, 5})
I'll counter with:
Python 3.10.0 (tags/v3.10.0:b494f59, Oct 4 2021, 19:00:18) [MSC v.1929
64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> a = frozenset((3, 4))
>>> a
frozenset({3, 4})
>>> b = a
>>> a |= {5,}
>>> a
frozenset({3, 4, 5})
>>> b
frozenset({3, 4})
frozenset doesn't support mutation, so:
a |= {5,}
falls back to:
a = a | {5,}
The same kind of thing happens with tuples:
>>> a = (3, 4)
>>> a
(3, 4)
>>> a += (5,)
>>> a
(3, 4, 5)
--
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