How to substitute symbol for matrix using symPy and numPy

Question

I\'m trying to substitute two symbols in my equation for the matrix form of each of them.

I created a commutator function which formed my expression:

Answer 1

Perhaps use lambdify:

import sympy as sy
import numpy as np    
from sympy.abc import x, y

z = ((x+y)**2).expand()
print(z)
# x**2 + 2*x*y + y**2
X = np.arange(6).reshape(2,3)
Y = np.arange(1,7).reshape(2,3)    

f = sy.lambdify((x, y), z, 'numpy')
print(f(X, Y))
# [[  1   9  25]
#  [ 49  81 121]]

assert np.allclose(f(X, Y), (X**2 + 2*X*Y + Y**2))