parameters: (self)
return_statement: return self._python_grad_func
docstring: Python gradient function callable.
docstring_summary: Python gradient function callable.
docstring_tokens: Python gradient function callable .
function: def python_grad_func(self):
      """Python gradient function callable."""
      return self._python_grad_func
function_tokens: def python_grad_func ( self ) : return self . _python_grad_func