Wrapping around a list in Python.

[shengjie.shengjie at live.com]

On Monday, 16 December 2013 12:59:32 UTC+8, Ben Finney  wrote:
> shengjie.shengjie at live.com writes:
> 
> 
> 
> > Hi guys, I am trying to create a fixed list which would allow my
> 
> > values to be wrapped around it.
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> 
> 
> This doesn't make a lot of sense to me, but I assume you have a purpose
> 
> in mind for this. What is the purpose? Perhaps it will help the
> 
> explanation if we know what it's for.
> 
> 
> 
> > For example i have 10 values : 0,1,2,3,4,5,6,7,8,9
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> 
> 
> Does this mean the input is a list, ‘[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]’? Or
> 
> do you mean something else? What is the input?
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> 
> 
> > I need to create a list which contains 4 numbers and when the number
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> > exceeds the list, it would overwrite the first value.
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> 
> 
> > [0,1,2,3]
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> > [4,1,2,3]
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> > [5,4,1,2]
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> 
> 
> That's three different lists. What is the input in each case? Under what
> 
> circumstances would you expect each one to be produced?
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> 
> 
> -- 
> 
>  \     “As scarce as truth is, the supply has always been in excess of |
> 
>   `\                                       the demand.” —Josh Billings |
> 
> _o__)                                                                  |
> 
> Ben Finney

Im currently creating a logging function for my GUI in pyqt.
I saved its feedback data values in a .txt file and I access these values by placing them in a list. However, this list gets really big and I am trying to find a work around.