(self)
Allow derivatives wrt Derivatives if it contains a function.

        Examples
        ========

            >>> from sympy import Function, Symbol, Derivative
            >>> f = Function('f')
            >>> x = Symbol('x')
            >>> Derivative(f(x),x)._diff_wrt
            True
            >>> Derivative(x**2,x)._diff_wrt
            False
Allow derivatives wrt Derivatives if it contains a function.
Allow derivatives wrt Derivatives if it contains a function .
def _diff_wrt(self):
        """Allow derivatives wrt Derivatives if it contains a function.

        Examples
        ========

            >>> from sympy import Function, Symbol, Derivative
            >>> f = Function('f')
            >>> x = Symbol('x')
            >>> Derivative(f(x),x)._diff_wrt
            True
            >>> Derivative(x**2,x)._diff_wrt
            False
        """
        if self.expr.is_Function:
            return True
        else:
            return False
def _diff_wrt ( self ) : if self . expr . is_Function : return True else : return False