Method _deprecated

plotly/tools.py:570–577

(old_method, new_method=None)

class FigureFactory(object):
    @staticmethod
    def _deprecated(old_method, new_method=None):
        if new_method is None:
            # The method name stayed the same.
            new_method = old_method
        warnings.warn(
            "plotly.tools.FigureFactory.{} is deprecated. "
            "Use plotly.figure_factory.{}".format(old_method, new_method)
        )

    @staticmethod
    def create_2D_density(*args, **kwargs):