sympy 计算表达式

  

   

    

     

    
    

     

      from sympy import *
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      def test_matrix():
     
    
   

    

     

    
    

     

       A = Matrix([[x, x*y], [sin(z)+4, x**z]])
     
    
   

    

     

    
    

     

       sol = Matrix([[1, 2], [sin(3)+4, 1]])
     
    
   

    

     

    
    

     

       f = lambdify((x,y,z), A, modules="sympy")
     
    
   

    

     

    
    

     
 assert f(1,2,3) == sol
     
    
   

    

     

    
    

     

       f = lambdify((x,y,z), (A, [A]), modules="sympy")
     
    
   

    

     

    
    

     
 assert f(1,2,3) == (sol,[sol])
     
    
  
 

https://www.kutu66.com/Python-Module-Examples/article_66605

实例 1

复制

def test_threaded(): @threaded def function(expr, *args): return 2*expr + sum(args) assert function(Matrix([[x, y], [1, x]]), 1, 2) == Matrix([[2*x + 3, 2*y + 3], [5, 2*x + 3]]) assert function(Eq(x, y), 1, 2) == Eq(2*x + 3, 2*y + 3) assert function([x, y], 1, 2) == [2*x + 3, 2*y

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原文链接：blog.csdn.net/jacke121/article/details/108161926