[Tutor] doing maths on lists
Chris Begert
cbeg at gmx.de
Mon Dec 20 11:58:49 CET 2010
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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