diff --git a/src/pymor/discretizers/builtin/gui/jupyter/matplotlib.py b/src/pymor/discretizers/builtin/gui/jupyter/matplotlib.py index f4be348c5af44c7fd3c15a1c5cbb6b400b011dd4..83ba3b7c772aca283ca83403311bca72e3383a1c 100644 --- a/src/pymor/discretizers/builtin/gui/jupyter/matplotlib.py +++ b/src/pymor/discretizers/builtin/gui/jupyter/matplotlib.py @@ -38,7 +38,7 @@ class MPLPlotBase: if not config.HAVE_IPYWIDGETS and len(U[0]) > 1: raise ImportError('cannot visualize: import of ipywidgets failed') self.legend = (legend,) if isinstance(legend, str) else legend - assert legend is None or isinstance(legend, tuple) and len(legend) == len(U) + assert self.legend is None or isinstance(self.legend, tuple) and len(self.legend) == len(U) self._set_limits(U) self.plots = []