def _check_networkx_graph(self, graph): try: if not isinstance(graph, nx.classes.graph.Graph): raise TypeError("This is not

def _check_networkx_graph(self, graph): try: if not isinstance(graph, nx.classes.graph.Graph): raise TypeError("This is not a NetworkX graph. Please see requirements.") except: exit("This is not a NetworkX graph. Please see requirements.") First, I don't want any library to call exit on me. Second, what is it even trying to do? Raising an exception and immediately catching it? At best this is just a horrible style.