[Tutor] doing maths on lists

[Nitin Pawar]

you may want to do type casting whenever you have a float answer cause
integer to float causes data loss

On Mon, Dec 20, 2010 at 4:28 PM, Chris Begert <cbeg at gmx.de> wrote:

> Bonjour
>
> I have three lists with 65 float items and would like to do the following
> sum:
>
> L0 = ([sum(L0A[i]*cos(L0B[i]+L0C[i]*JME) for i in range(0,64,1))])
>
> So it just should do a sum across all the items in the list:
>
> L0A[0]*cos(L0B[0]+L0C[0]*JME)+ L0A[1]*cos(L0B[1]+L0C[1]*JME)+...
> + L0A[64]*cos(L0B[64]+L0C[64]*JME)= some float number
>
>
> However, I always get this error:
>
> TypeError: can't multiply sequence by non-int of type 'float'
>
> I looked it up and there seems to be some solution using either the
> "for-in" command or the "map(int,...)" command but I just can't get it to
> work....
>
>
> Any help will be very much appreciated :)
>
> Greetings from Sydney
> Chris
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-- 
Nitin Pawar
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