DelZeroDegNodes  (SWIG)
'''''''''''''''''''''''

.. function:: DelZeroDegNodes(Graph)
   :noindex:

Removes all the zero-degree nodes from *Graph*.

Parameters:

- *Graph*: graph (input and output)
    A Snap.py graph or a network.

Return value:

- None


The following example shows how to delete all zero-degree nodes from 
:class:`TNGraph`, :class:`TUNGraph`, and :class:`TNEANet`::

    import snap

    Graph = snap.GenRndGnm(snap.PNGraph, 100, 0)
    print("Number of nodes in directed graph: %d" % Graph.GetNodes())
    snap.DelZeroDegNodes(Graph)
    print("Number of nodes in directed graph after delete: %d" % Graph.GetNodes())

    UGraph = snap.GenRndGnm(snap.PUNGraph, 100, 0)
    print("Number of nodes in undirected graph: %d" % UGraph.GetNodes())
    snap.DelZeroDegNodes(UGraph)
    print("Number of nodes in undirected graph after delete: %d" % UGraph.GetNodes())

    Network = snap.GenRndGnm(snap.PNEANet, 100, 0)
    print("Number of nodes in network: %d" % Network.GetNodes())
    snap.DelZeroDegNodes(Network)
    print("Number of nodes in network after delete: %d" % Network.GetNodes())