input: 
  def elementwiseMatrixProduct(A, B):
      """
      Takes two matrices, A and B, and produces a matrix C where each element is the product
      of the corresponding elements of A and B.
      
      >>> elementwiseMatrixProduct([[3, 4], [1, 2]], [[7, 5], [0, 1]])
      [[21, 20], [0, 2]]
      """
      if len(A) != len(B) or len(A[0]) != len(B[0]):
          return "Matrix dimensions do not match"
      
      C = [[A[i][j] * B[i][j] for j in range(len(A[0]))] for i in range(len(A))]
      
      return C
  
output:     if len(A) != len(B) or len(A[0]) != len(B[0]):
          return "Matrix dimensions do not match"
      
      C = [[A[i][j] * B[i][j] for j in range(len(A[0]))] for i in range(len(A))]
      
      return C