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asked 2017-03-06 19:39:41 -0500

sssageeee gravatar image

Hello, guys! ... First of all, I'm very new to sage and this forum, so please be generous for my question, please...

So, I've wrote in sage (between @@@@@'s):








Then, the result for p and q was

p=[2,3,1] and q=[2,3,1].

But, what I actually want is that p doesn't change; so I want to have

p=[3,2,1] and q=[2,3,1]

so that p doesn't get changed when we set 'q=p', while q is defined to be p when we set 'q=p' and then q get changed via the codes followed by 'q=p' above... In other words, is there a way to 'overwrite' q to be p, and not changing p? Thank you!!!

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Just as a gentle FYI, if you highlight things and then click on the "010101" button, it will highlight code, rather than your @ solution.

kcrisman gravatar imagekcrisman ( 2017-03-06 19:45:08 -0500 )edit

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answered 2017-03-06 22:30:58 -0500

nbruin gravatar image

That's how python works. You can use


or another popular idiom in python is to take a "slice" of a list, which is a copy, that happens to cover the whole list:

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Asked: 2017-03-06 19:39:41 -0500

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Last updated: Mar 06