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You can simply call the method .networkx_graph();

sage: import networkx as nx
sage: G = graphs.PetersenGraph()
sage: ng = G.networkx_graph()
sage: ng
<networkx.classes.graph.Graph object at 0xd3c2f8c>
sage: nx.double_edge_swap(ng)
1

Incidentally, I didn't know this five minutes ago, so I should tell you how I found out. Lots of functionality in Sage objects lives inside them, in methods. Typically conversion functions are either called ".targettype" or "._targettype_", so I tried

sage: G.netw[HERE I HIT TAB]
G.networkx_graph

which looked promising. And then typing

sage: G.networkx_graph?

gives the documentation:

Help on method networkx_graph in module sage.graphs.generic_graph:

networkx_graph(self, copy=True) method of sage.graphs.graph.Graph instance
Creates a new NetworkX graph from the Sage graph.

INPUT:

-  copy - if False, and the underlying
implementation is a NetworkX graph, then the actual object itself
is returned.

EXAMPLES::

sage: G = graphs.TetrahedralGraph()
sage: N = G.networkx_graph()
sage: type(N)
<class 'networkx.classes.graph.Graph'>

[etc.]

PS: Okay, to be perfectly honest, I tried it first and only looked at the documentation when I came to write this. But I would've looked at the documentaion if it hadn't worked, I promise! :^)

You can simply call the method .networkx_graph();.networkx_graph():

sage: import networkx as nx
sage: G = graphs.PetersenGraph()
sage: ng = G.networkx_graph()
sage: ng
<networkx.classes.graph.Graph object at 0xd3c2f8c>
sage: nx.double_edge_swap(ng)
1

Incidentally, I didn't know this five minutes ago, so I should tell you how I found out. Lots of functionality in Sage objects lives inside them, in methods. Typically conversion functions are either called ".targettype" or "._targettype_", so I tried

sage: G.netw[HERE I HIT TAB]
G.networkx_graph

which looked promising. And then typing

sage: G.networkx_graph?

gives the documentation:

Help on method networkx_graph in module sage.graphs.generic_graph:

networkx_graph(self, copy=True) method of sage.graphs.graph.Graph instance
Creates a new NetworkX graph from the Sage graph.

INPUT:

-  copy - if False, and the underlying
implementation is a NetworkX graph, then the actual object itself
is returned.

EXAMPLES::

sage: G = graphs.TetrahedralGraph()
sage: N = G.networkx_graph()
sage: type(N)
<class 'networkx.classes.graph.Graph'>

[etc.]

PS: Okay, to be perfectly honest, I tried it first and only looked at the documentation when I came to write this. But I would've looked at the documentaion if it hadn't worked, I promise! :^)

You can simply call the method .networkx_graph():

sage: import networkx as nx
sage: G = graphs.PetersenGraph()
sage: ng = G.networkx_graph()
sage: ng
<networkx.classes.graph.Graph object at 0xd3c2f8c>
sage: nx.double_edge_swap(ng)
1

Incidentally, I didn't know this five minutes ago, so I should tell you how I found out. Lots of functionality in for Sage objects lives inside them, in methods. Typically conversion functions are either called ".targettype" or "._targettype_", so I tried

sage: G.netw[HERE I HIT TAB]
G.networkx_graph

which looked promising. And then typing

sage: G.networkx_graph?

gives the documentation:

Help on method networkx_graph in module sage.graphs.generic_graph:

networkx_graph(self, copy=True) method of sage.graphs.graph.Graph instance
Creates a new NetworkX graph from the Sage graph.

INPUT:

-  copy - if False, and the underlying
implementation is a NetworkX graph, then the actual object itself
is returned.

EXAMPLES::

sage: G = graphs.TetrahedralGraph()
sage: N = G.networkx_graph()
sage: type(N)
<class 'networkx.classes.graph.Graph'>

[etc.]

PS: Okay, to be perfectly honest, I tried it first and only looked at the documentation when I came to write this. But I would've looked at the documentaion documentation if it hadn't worked, I promise! :^)

You can simply call the method .networkx_graph():

sage: import networkx as nx
sage: G = graphs.PetersenGraph()
sage: ng = G.networkx_graph()
sage: ng
<networkx.classes.graph.Graph object at 0xd3c2f8c>
sage: nx.double_edge_swap(ng)
1

Incidentally, I didn't know this five minutes ago, so I should tell you how I found out. Lots of functionality for Sage objects lives inside them, in methods. Typically conversion functions are either called ".targettype" or "._targettype_", so I tried

sage: G.netw[HERE I HIT TAB]
G.networkx_graph

which looked promising. And then typing

sage: G.networkx_graph?

gives the documentation:

Help on method networkx_graph in module sage.graphs.generic_graph:

networkx_graph(self, copy=True) method of sage.graphs.graph.Graph instance
Creates a new NetworkX graph from the Sage graph.

INPUT:

-  copy - if False, and the underlying
implementation is a NetworkX graph, then the actual object itself
is returned.

EXAMPLES::

sage: G = graphs.TetrahedralGraph()
sage: N = G.networkx_graph()
sage: type(N)
<class 'networkx.classes.graph.Graph'>

[etc.]

PS: Okay, to be perfectly honest, I tried it first and only looked at the documentation when I came to write this. But I would've looked at the documentation if it hadn't worked, I promise! :^)

You can simply call the method .networkx_graph():

sage: import networkx as nx
sage: G = graphs.PetersenGraph()
sage: ng = G.networkx_graph()
sage: ng
<networkx.classes.graph.Graph object at 0xd3c2f8c>
sage: nx.double_edge_swap(ng)
1

Incidentally, I didn't know this five minutes ago, so I should tell you how I found out. Lots of functionality for Sage objects lives inside them, in methods. Typically conversion functions are either called ".targettype" or "._targettype_", so I tried

sage: G.netw[HERE I HIT TAB]
G.networkx_graph

which looked promising. And then typing

sage: G.networkx_graph?

gives the documentation:

Creates a new NetworkX graph from the Sage graph.

INPUT:

-  copy        * "copy" - if False, and the underlying
underlying implementation is a a
NetworkX graph, then the actual object itself
itself is returned.

EXAMPLES::

EXAMPLES:

sage: G = graphs.TetrahedralGraph()
sage: N = G.networkx_graph()
sage: type(N)
<class 'networkx.classes.graph.Graph'>

[etc.]
sage: G = graphs.TetrahedralGraph()
sage: G = Graph(G, implementation='networkx')
sage: N = G.networkx_graph()
sage: G._backend._nxg is N
False

sage: G = Graph(graphs.TetrahedralGraph(), implementation='networkx')
sage: N = G.networkx_graph(copy=False)
sage: G._backend._nxg is N
True

PS: Okay, to be perfectly honest, I tried it first and only looked at the documentation when I came to write this. But I would've looked at the documentation if it hadn't worked, I promise! :^)