Jaap Woldringh added the comment:
Op 17-01-2020 om 14:03 schreef Karthikeyan Singaravelan:
> Karthikeyan Singaravelan added the comment:
>
> You're referencing to the same list 3 times in B. So modifying it once means
> all the elements referring to same object reflect the change. Make a copy
Ezio Melotti added the comment:
See also
https://docs.python.org/3/faq/programming.html#why-did-changing-list-y-also-change-list-x
You can use the builtin function id() to see the id of the lists, and verify
whether they refer to the same object or not.
--
nosy: +ezio.melotti
Karthikeyan Singaravelan added the comment:
You're referencing to the same list 3 times in B. So modifying it once means
all the elements referring to same object reflect the change. Make a copy of
the list during append to ensure modification of one doesn't affect other. This
is not a
New submission from Jaap Woldringh :
Python used:
Python 3.6.9 (default, Nov 7 2019, 10:44:02)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
In Ubuntu 18.04.3
But in any other version of Python3, and Python2, that I tried, the behaviour
of a
