Jan. 6, 2015
12:52 a.m.
On 05-Jan-15 1:56 PM, David€id wrote:
On 5 January 2015 at 20:40, Colin J. Williams <cjwilliams43@gmail.com> wrote:
This illustrates a failure, which is reported later in the calculation:
A2= np.matrix([[1, 2, -2], [-3, -1, 4], [4, 2 -6]])
Here 2 - 6 is treated as an expression.
There should be a comma between 2 and -6. The rectangularity is checked, and in this case, it is not fulfilled. As such, NumPy creates a square matrix of size 1x1 of dtype object.
If you want to make sure what you have manually inputed is correct, you should include a couple of assertions afterwards.
/David. David,
Thanks. My suggestion was that numpy should do that checking, Colin W.