"""
**********
Exceptions
**********
Base exceptions and errors for NetworkX.
"""
__author__ = """Aric Hagberg (hagberg@lanl.gov)\nPieter Swart (swart@lanl.gov)\nDan Schult(dschult@colgate.edu)"""
# Copyright (C) 2004-2008 by
# Aric Hagberg <hagberg@lanl.gov>
# Dan Schult <dschult@colgate.edu>
# Pieter Swart <swart@lanl.gov>
# All rights reserved.
# BSD license.
#
# Exception handling
# the root of all Exceptions
class NetworkXException(Exception):
"""Base class for exceptions in NetworkX."""
class NetworkXError(NetworkXException):
"""Exception for a serious error in NetworkX"""
class NetworkXPointlessConcept(NetworkXException):
"""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.
"""
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