reivax85 at gmail.com
Wed Oct 18 14:07:16 CEST 2006
Fredrik Lundh wrote:
> "Sssasss" wrote:
> > I wan't to multiply two square matrixes, and i don't understand why it
> > doesn't work.
> > def multmat(A,B):
> > "A*B"
> > if len(A)!=len(B): return "error"
> > D=
> > C=
> > for i in range(len(A)): D.append(0)
> > for i in range(len(A)): C.append(D)
> append doesn't copy data, so you're basically adding len(A) references to
> the same D list to C. for more on this, see:
Ok!! Tank you very much, i understand now.
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