(self)
return False
Is it allowed to take derivative wrt to this instance.

        This determines if it is allowed to take derivatives wrt this object.
        Subclasses such as Symbol, Function and Derivative should return True
        to enable derivatives wrt them. The implementation in Derivative
        separates the Symbol and non-Symbol _diff_wrt=True variables and
        temporarily converts the non-Symbol vars in Symbols when performing
        the differentiation.

        Note, see the docstring of Derivative for how this should work
        mathematically.  In particular, note that expr.subs(yourclass, Symbol)
        should be well-defined on a structural level, or this will lead to
        inconsistent results.

        Examples
        ========

        >>> from sympy import Expr
        >>> e = Expr()
        >>> e._diff_wrt
        False
        >>> class MyClass(Expr):
        ...     _diff_wrt = True
        ...
        >>> (2*MyClass()).diff(MyClass())
        2
Is it allowed to take derivative wrt to this instance.
Is it allowed to take derivative wrt to this instance .
def _diff_wrt(self):
        """Is it allowed to take derivative wrt to this instance.

        This determines if it is allowed to take derivatives wrt this object.
        Subclasses such as Symbol, Function and Derivative should return True
        to enable derivatives wrt them. The implementation in Derivative
        separates the Symbol and non-Symbol _diff_wrt=True variables and
        temporarily converts the non-Symbol vars in Symbols when performing
        the differentiation.

        Note, see the docstring of Derivative for how this should work
        mathematically.  In particular, note that expr.subs(yourclass, Symbol)
        should be well-defined on a structural level, or this will lead to
        inconsistent results.

        Examples
        ========

        >>> from sympy import Expr
        >>> e = Expr()
        >>> e._diff_wrt
        False
        >>> class MyClass(Expr):
        ...     _diff_wrt = True
        ...
        >>> (2*MyClass()).diff(MyClass())
        2
        """
        return False
def _diff_wrt ( self ) : return False