On Mar 29, 4:18 am, Roel Schroeven <[EMAIL PROTECTED]> wrote: > aeneng schreef: > > > > > > > Hello everyone, > > > I am just starting to use python in numerical cacluation. > > I need you to help me to see what's wrong with the following piece of > > codes, which computes the cross product of two vectors and returns > > the result. u and v are two 3x1 matrix. > > > when I import the function, error message show like this > >>>> import cross > > Traceback (most recent call last): > > File "<stdin>", line 1, in ? > > File "cross.py", line 8 > > ppp2=u[2]*v[0]-u[0]*v[2] > > ^ > > SyntaxError: invalid syntax > > > WHAT IS WRONG WITH MY CODE? > > > I appreciate your help. > > > ##here is the function definition. > > ##cross.py## > > def cross(u,v) > > """input two vectors u and v in 3-D space, > > output a cross product of vector w, in column or in row > > accordingly.""" > > ppp1,ppp2,ppp3=0.0,0.0,0.0 > > You forgot the : after def cross(u, v)
No; directional is only signed and unsigned. </tangent> There's a laptop on my computer. -- http://mail.python.org/mailman/listinfo/python-list