(specifically the same path that it was loaded from).Ĭall. To skip writing the read source back into the same file You can use _file() (alternative constructor): To directly display the rendered visualization of an existing DOT source file replace ( ' \\ ', '/' ) 'doctest-output/the-holy-hand-grenade.gv.png' write_text ( src, encoding = 'ascii' ) 66 > graphviz. Path ( 'doctest-output/the-holy-hand-grenade.gv' ) > filepath. Furthermore, readgraphviz will throw an exception if it encounters parallel edges and cannot add them to the. One must pass readgraphviz an undirected graph when reading an undirected graph the same is true for directed graphs. iterinedges ( nbunch = None, keys = False ) ¶> doctest_mark_exe () > import pathlib > import graphviz > src = 'digraph "the holy hand grenade" ' > filepath = pathlib. The DOT language can specify both directed and undirected graphs, and readgraphviz differentiates between the two. If the optional nbunch (container of nodes) only edgesĮdges may produce unpredictable results. iteredges ( nbunch = None, keys = False ) ¶ iterdegree ( nbunch = None, indeg = True, outdeg = True ) ¶ Return True if graph is undirected or False if not. Strict graphs do not allow parallel edges or self loops. Return True if graph is directed or False if not. Note: modifying the graph structure while iterating overĮdges may produce unpredictable results.
If the optional nbunch (container of nodes) only out edgesĪdjacent to nodes in nbunch will be returned. in_edges_iter ( nbunch = None, keys = False ) ¶ If the optional nbunch (container of nodes) only in edgesĪdjacent to nodes in nbunch will be returned. in_edges ( nbunch = None, keys = False ) ¶ Return an iterator over the in-degree of the nodes given in Keyed by node with value set to the degree. has_node ( "a" ) True > "a" in G # same as G.has_node('a') True in_degree ( nbunch = None, with_labels = False ) ¶ delete_node ( n ) ¶Īttempting to remove a node that isn’t in the graph will produce Remove edges from ebunch (a container of edges).
With optional key argument will only remove an edge delete_edge ( u, v = None, key = None ) ¶ Return an iterator over the degree of the nodes given in degree_iter ( nbunch = None, indeg = True, outdeg = True ) ¶ Using optional with_labels=True returns a dictionary degree ( nbunch = None, with_labels = False ) ¶ This version loads a new graph with nodes, edges and attributes. Versions <=1.6 made a copy by writing and the reading a dot string. Remove all nodes, edges, and attributes from the graph. Return subgraph induced by nodes in nbunch. add_subgraph ( nbunch = None, name = None, ** attr ) ¶ add_nodes_from ( nlist, color = "red" ) # set all nodes in nlist red add_path ( nlist ) ¶Īdd the path of nodes given in nlist. Write graph in dot format to file on path.Īcyclic ( args = '', copy = False ) ¶ Return a string representation of graph in dot format.Īdjust directed graphs to improve layout aspect ratio. Return a list of all subgraphs in the graph. Return root graph of subgraph or None if graph is root graph. Return parent graph of subgraph or None if graph is root graph. Return a string (unicode) representation of graph in dot format. Return copy of directed graph with edge directions reversed. Return the out-degree of nodes given in nbunch container. Return a list of the nodes attached to n.
Return iterator over successor nodes of n. Return iterator over predecessor nodes of n. Return an iterator over the out-degree of the nodes given in nbunch container. Return an iterator over all the nodes in the graph. Return iterator over the nodes attached to n. Return iterator over out edges in the graph. Return an iterator over the in-degree of the nodes given in nbunch container. Return the in-degree of nodes given in nbunch container. Return True if n is in the graph or False if not. Return True if u has an edge to v or False if not. Return True an edge u-v is in the graph or False if not. Return existing subgraph with specified name or None if it doesn't exist. Return a node object (Node) corresponding to node n. Return an edge object (Edge) corresponding to edge (u,v). Load a graph from a string in dot format. Output graph to path in specified format. Remove edge between nodes u and v from the graph. Return an iterator over the degree of the nodes given in nbunch container. Return the degree of nodes given in nbunch container. Reverse sufficient edges in digraph to make graph acyclic.Īdd nodes to graph from a container ebunch. Return True if graph is strict or False if not. Name : Name for the graph strict : True | False ( True for simple graphs ) directed : True | False data : Dictionary of dictionaries or dictionary of lists representing nodes or edges to load into initial graph string : String containing a dot format graph handle : Swig pointer to an agraph_t data structure Attributes directed
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