python - Creating matrices in Numpy? -


i've tried different ways can't understand why cannot create matrix in numpy.

i "typeerror: new() takes 2 4 positional arguments 5 given" error when call:

def creategst(dictionary):     x = int(dictionary['x'])     y = int(dictionary['y'])     z = int(dictionary['z'])     matrix = np.matrix( (str(1),str(0),str(0),str(x)),(str(0),str(1),str(0),str(y)),(str(0),str(0),str(1),str(z)),(str(0),str(0),str(0),str(1)) )     return matrix

it did not work without typecasting str(). i'm using python 3.4.

the answer right in error message. you're passing 5 parameters np.matrix:

matrix = np.matrix((str(1), str(0), str(0), str(x)),                    (str(0), str(1), str(0), str(y)),                    (str(0), str(0), str(1), str(z)),                    (str(0), str(0), str(0), str(1)))

np.matrix not take 5 parameters. meant do:

matrix = np.matrix(((str(1), str(0), str(0), str(x)),                     (str(0), str(1), str(0), str(y)),                     (str(0), str(0), str(1), str(z)),                     (str(0), str(0), str(0), str(1))))

notice parentheses.


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