[Tutor] doing maths on lists

Chris Begert cbeg at gmx.de
Mon Dec 20 11:58:49 CET 2010


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
GRATIS! Movie-FLAT mit über 300 Videos. 
Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome

More information about the Tutor mailing list