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diff --git a/lib/python2.7/site-packages/setoolsgui/networkx/exception.py b/lib/python2.7/site-packages/setoolsgui/networkx/exception.py
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+++ b/lib/python2.7/site-packages/setoolsgui/networkx/exception.py
@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+"""
+**********
+Exceptions
+**********
+
+Base exceptions and errors for NetworkX.
+
+"""
+__author__ = """Aric Hagberg (hagberg@lanl.gov)\nPieter Swart (swart@lanl.gov)\nDan Schult(dschult@colgate.edu)\nLoïc Séguin-C. <loicseguin@gmail.com>"""
+#    Copyright (C) 2004-2011 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.
+"""
+
+class NetworkXAlgorithmError(NetworkXException):
+    """Exception for unexpected termination of algorithms."""
+
+class NetworkXUnfeasible(NetworkXAlgorithmError):
+    """Exception raised by algorithms trying to solve a problem
+    instance that has no feasible solution."""
+
+class NetworkXNoPath(NetworkXUnfeasible):
+    """Exception for algorithms that should return a path when running
+    on graphs where such a path does not exist."""
+
+class NetworkXUnbounded(NetworkXAlgorithmError):
+    """Exception raised by algorithms trying to solve a maximization
+    or a minimization problem instance that is unbounded."""
+
+class NetworkXNotImplemented(NetworkXException):
+    """Exception raised by algorithms not implemented for a type of graph."""