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    9vf:                     @   s&   d Z dgZddlZejdddZdS )	z
Ego graph.
	ego_graph    N   TFc           	      C   s   |rB|dk	r(t j|  |||d\}}qvtt j|  ||d}n4|dk	rbt j| |||d\}}ntt j| ||d}| | }|s|| |S )a  Returns induced subgraph of neighbors centered at node n within
    a given radius.

    Parameters
    ----------
    G : graph
      A NetworkX Graph or DiGraph

    n : node
      A single node

    radius : number, optional
      Include all neighbors of distance<=radius from n.

    center : bool, optional
      If False, do not include center node in graph

    undirected : bool, optional
      If True use both in- and out-neighbors of directed graphs.

    distance : key, optional
      Use specified edge data key as distance.  For example, setting
      distance='weight' will use the edge weight to measure the
      distance from the node n.

    Notes
    -----
    For directed graphs D this produces the "out" neighborhood
    or successors.  If you want the neighborhood of predecessors
    first reverse the graph with D.reverse().  If you want both
    directions use the keyword argument undirected=True.

    Node, edge, and graph attributes are copied to the returned subgraph.
    N)cutoffZweight)r   )nxZsingle_source_dijkstraZto_undirecteddictZ"single_source_shortest_path_lengthZsubgraphcopyremove_node)	GnZradiuscenterZ
undirectedZdistancesp_H r   ;/tmp/pip-unpacked-wheel-_lngutwb/networkx/generators/ego.pyr   	   s,    $     
)r   TFN)__doc____all__Znetworkxr   	_dispatchr   r   r   r   r   <module>   s   