在评估矩阵产品之前,如何打印矩阵产品?

您可以使用 MatMul : https://docs.sympy.org/latest/modules/matrices/expressions.html#sympy.matrices.expressions.MatMul

In [16]: from sympy import *                                                                                                                   

In [17]: A = Matrix([[1, 2], [3, 4]])                                                                                                          

In [18]: B = Matrix([[5, 6], [7, 8]])                                                                                                          

In [19]: product = MatMul(A, B)                                                                                                                

In [20]: product                                                                                                                               
Out[20]: 
⎡1  2⎤ ⎡5  6⎤
⎢    ⎥⋅⎢    ⎥
⎣3  4⎦ ⎣7  8⎦

In [21]: product.doit()                                                                                                                        
Out[21]: 
⎡19  22⎤
⎢      ⎥
⎣43  50⎦

In [22]: Eq(product, product.doit())                                                                                                           
Out[22]: 
⎡1  2⎤ ⎡5  6⎤   ⎡19  22⎤
⎢    ⎥⋅⎢    ⎥ = ⎢      ⎥
⎣3  4⎦ ⎣7  8⎦   ⎣43  50⎦