code: def to_sympy_matrix(value):
      
      if isinstance(value, sympy.Matrix):
          return value
      try:
          return sympy.Matrix(value)
      except ValueError as original_exception:
          if isinstance(value, list) and len(value) and all([not isinstance(x, list) for x in value]):
              # Let's try to convert the contents into a list
              # (this is required for 0.7.4 if we pass in a list of strings)
              # See `test_creation_of_column_matrix_from_list_of_strings` test
              list_of_lists_value = [[x] for x in value]
              try:
                  m = sympy.Matrix(list_of_lists_value)
                  return m
              except Exception:
                  raise original_exception
          else:
              raise original_exception
docs: Converts value to a `sympy.Matrix` object, if possible.
      Leaves the value as `sympy.Matrix` if it already was
      :param value: value to convert
      :return:
      :rtype: `sympy.Matrix`