I would say, better to avoid it. That is a personal comment.
Vincent
Le 27/01/2021 à 18:48, G. M.-S. a écrit :
So if I understand you well, "x in P" should not be used for serious work?
Guillermo
On Wed, 27 Jan 2021 at 08:55, Vincent Delecroix <20100.delecr...@gmail.com>
wrote:
Oups, I forgot to copy all the relevant input
sage: a = 1.9999999999999999
Vincent
Le 26/01/2021 à 19:38, G. M.-S. a écrit :
Just out of curiosity: What is "a"?
Guillermo
On Tue, 26 Jan 2021 at 09:29, Vincent Delecroix <
20100.delecr...@gmail.com>
wrote:
And what should be thought about "4.0 in ZZ" ?
Even more fun
sage: a in ZZ
False
sage: 4 / a in ZZ
False
sage: 4.0 / a in ZZ
True
Does Sage even have any clear specification for "x in P"?
Concerning input that are of the wrong type, it is common
in Python (?) to just throw error
>>> list(range(4))
[0, 1, 2, 3]
>>> list(range(4.0))
Traceback (most recent call last):
...
TypeError: 'float' object cannot be interpreted as an integer
Vincent
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