15. Exceptions¶

Base exceptions and errors for NetworkX.

class networkx.NetworkXException[source]¶

Base class for exceptions in NetworkX.

class networkx.NetworkXError[source]¶

Exception for a serious error in NetworkX

class networkx.NetworkXPointlessConcept[source]¶

Harary, F. and Read, R. “Is the Null Graph a Pointless Concept?” In Graphs and Combinatorics Conference, George Washington University. New York: Springer-Verlag, 1973.

class networkx.NetworkXAlgorithmError[source]¶

Exception for unexpected termination of algorithms.

class networkx.NetworkXUnfeasible[source]¶

Exception raised by algorithms trying to solve a problem instance that has no feasible solution.

class networkx.NetworkXNoPath[source]¶

Exception for algorithms that should return a path when running on graphs where such a path does not exist.

class networkx.NodeNotFound[source]¶

Exception raised if requested node is not present in the graph

class networkx.NetworkXUnbounded[source]¶

Exception raised by algorithms trying to solve a maximization or a minimization problem instance that is unbounded.