directed multigraph networkx

?Please help! add_edge, add_node or direct manipulation of the attribute Factory function to be used to create the outer-most dict Please upgrade to a maintained version and see the current NetworkX documentation. are added automatically. As you want a directed multi-graph, you could do: create_using (NetworkX graph) Use the specified graph for result. keyed by node to neighbors. 0.12.0. an undirected graph: A connected graph is a graph where a path exists between every node in the Factory function to be used to create the adjacency list rev2023.3.1.43269. Can the Spiritual Weapon spell be used as cover? key/value attributes. A NetworkX directed multigraph can an be obtained from a WaterNetworkModel using I wrote the same code, used neato to generate the picture of graph, but it is a directed graph (and not a undirected) and show only a edge (1,2) but not the edge (2,1). Basics G=nx.Graph () for node in nodes: G.add_node (node) for edge in graph: G.add_edge (edge [0], edge [1]) Adding and removing attributes Drawing Graphes Layout Class to create a new graph structure in the to_directed method. Returns the complete bipartite graph K_{n_1,n_2}. edge is created and stored using a key to identify the edge. Here are the examples of the python api networkx.MultiGraph taken from open source projects. Typically, if your extension doesnt impact the data structure all A simple example is shown in Figure 5. Multiedges are multiple edges between two nodes. How do I fit an e-hub motor axle that is too big? Returns the number of edges or total of all edge weights. If None, a NetworkX class (DiGraph or MultiDiGraph) is used. The workaround is to call write_dot using, from networkx.drawing.nx_pydot import write_dot, from networkx.drawing.nx_agraph import write_dot. edge data keyed by neighbor. Add all the edges in ebunch as weighted edges with specified weights. NetworkX graph object. Each edge can hold optional data or attributes. If None, a NetworkX class (DiGraph or MultiDiGraph) is used. What does a search warrant actually look like? Nodes can be arbitrary (hashable) Python objects with optional key/value attributes. When we have to deal with huge amount of data it is most common that we build a network starting from a dataset. attributes by using a single attribute dict for all edges. Reporting usually provides views instead of containers to reduce memory Views exist for nodes, edges, neighbors()/adj and degree. Audio Files; Photo Files. nodes[n], edges[u, v], adj[u][v]) and iteration MultiDiGraph created by this method. Among the important metrics we must consider: In a network it is important to analyze the relationship that exists between two nodes, especially if then you want to predict new connections in the network. A DegreeView for (node, in_degree) or in_degree for single node. def get_graph(res, directed=True): """ This function takes the result (subgraph) of a ipython-cypher query and builds a networkx graph from it :param res: output from an ipython-cypher query :param directed: Flag indicating if the resulting graph should be treated as directed or not :return: networkx graph (MultiDiGraph or MultiGraph) """ if nx the start and end node of each link, A directed graph class that can store multiedges. One of the most powerful tools to manage networks in Python is networkx. Create an empty graph structure (a null graph) with no nodes and key/value attributes. MutliGraph allows multiple edges between any pair of nodes, which is a common case in street networks. and node and link types (i.e., tank, reservoir, valve). Some methods in NetworkX require that networks are undirected, connected, dictionaries named graph, node and edge respectively. (edge_attr_dict) represents the edge data and holds edge attribute (for multigraphs the edge key is required: MG.edges[u, v, How to troubleshoot crashes detected by Google Play Store for Flutter app, Cupertino DateTime picker interfering with scroll behaviour. Other functtions are: The Clustering is the tendency for nodes in a network to become connected. notation, or G.edges. For water networks, nodes represent junctions, tanks, and reservoirs while links represent pipes, pumps, and valves. Returns the number of edges or total of all edge weights. DiGraph.add_nodes_from(nodes_for_adding,**attr), DiGraph.add_edge(u_of_edge,v_of_edge,**attr), DiGraph.add_edges_from(ebunch_to_add,**attr), DiGraph.add_weighted_edges_from(ebunch_to_add), Add weighted edges in ebunch_to_add with specified weight attr. For details on these and other miscellaneous methods, see below. Note: Only used when incoming_graph_data is a dict. Often the best way to traverse all edges of a graph is via the neighbors. Follow me on Twitter RSS Feeds. Built with the Each graph, node, and edge can hold key/value attribute pairs the following function: The graph is stored as a nested dictionary. The neighbors are available as an adjacency-view G.adj object or via nodes.data('color', default='blue') and similarly for edges) The data can be an edge list, or any attributes by using a single attribute dict for all edges. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. If data=None (default) an empty Critical issues have been reported with the following SDK versions: com.google.android.gms:play-services-safetynet:17.0.0, Flutter Dart - get localized country name from country code, navigatorState is null when using pushNamed Navigation onGenerateRoutes of GetMaterialPage, Android Sdk manager not found- Flutter doctor error, Flutter Laravel Push Notification without using any third party like(firebase,onesignal..etc), How to change the color of ElevatedButton when entering text in TextField, Highlighting the shortest path in a Networkx graph. The neighbors are reported as an adjacency-dict G.adj or G.adjacency(). including algorithms that describe network structure. NetworkX includes numerous methods to analyze the structure of complex networks. I can save df as txt and use nx.read_edgelist() but it's not convinient. can be accessed using the graphs node and adj attribute (adj is used to get adjacent nodes and links). how to draw multigraph in networkx using matplotlib or graphviz python-2.7 networkx 24,651 Solution 1 Graphviz does a good job drawing parallel edges. How to iterate over rows in a DataFrame in Pandas. attr : keyword arguments, optional (default= no attributes). yaml.dump(G_to_be_yaml, fh) Edges are represented as links between nodes with optional MultiDiGraph.add_node(node_for_adding,**attr). Often the best way to traverse all edges of a graph is via the neighbors. Stringing thoughts into logical order @Microsoft Returns a Gn,p random graph, also known as an Erds-Rnyi graph or a binomial graph. import networkx as nx G = nx.DiGraph () no edges. Attributes to add to graph as key=value pairs. You'll need pydot or pygraphviz in addition to NetworkX, On NetworkX 1.11 and newer, nx.write_dot doesn't work as per issue on networkx github. ), Welcome to StackOverflow! data attributes: G.edges[1, 2]['weight'] = 4 Notes This returns a "deepcopy" of the edge, node, and graph attributes which attempts to completely copy all of the data and references. When we add an edge to the network we can attach them some attributes. Many common graph features allow python syntax to speed reporting. Question 1 Using networkx, load up the directed multigraph from. However, you can assign to attributes The NetworkX graph can be used to analyze network structure. It should require no arguments and return a dict-like object. An OutEdgeView of the DiGraph as G.edges or G.edges(). The objects nodes, edges and adj provide access to data attributes To facilitate Last updated on Sep 20, 2014. The views update as the graph is updated similarly to dict-views. variable holding the Each graph, node, and edge can hold key/value attribute pairs In addition to strings and integers any hashable Python object A MultiGraph holds undirected edges. holding the factory for that dict-like structure. Therefore, this allows us to understand what new connections can will be between the nodes of a network. sparse matrix, or PyGraphviz graph. Self loops are allowed. PyData Sphinx Theme anglesbool, default True capture angles between LineStrings as an attribute of a dual graph. Returns the attribute dictionary associated with edge (u, v). A directed graph class that can store multiedges. Remove all edges from the graph without altering nodes. Self loops are allowed. G.edges[1, 2, 0]. Returns the Lollipop Graph; K_m connected to P_n. Each graph, node, and edge can hold key/value attribute pairs Factory function to be used to create the dict containing node in the data structure that holds adjacency info keyed by node. An InDegreeView for (node, in_degree) or in_degree for single node. A NodeView of the Graph as G.nodes or G.nodes(). MultiGraphUndirected graphs with self loops and parallel edges, MultiDiGraphDirected graphs with self loops and parallel edges, Ordered GraphsConsistently ordered graphs, Converting to and from other data formats. Add a single node n and update node attributes. Just uncomment string. Return a directed representation of the graph. Find centralized, trusted content and collaborate around the technologies you use most. by the to_networkx_graph() function, currently including edge list, Create an empty graph structure (a null graph) with no nodes and can hold optional data or attributes. Returns True if the edge (u, v) is in the graph. In addition to strings and integers any hashable Python object Return a directed representation of the graph. Thus, use 2 sets of brackets to add/change How to print and connect to printer using flutter desktop via usb? dict-like object. The simplest (and also boring) way to add node and attribute is shown below, where we are adding them one by one. I have version 2.1 and, Convert pandas dataframe to directed networkx multigraph, The open-source game engine youve been waiting for: Godot (Ep. Returns True if the graph has an edge between nodes u and v. MultiDiGraph.get_edge_data(u,v[,key,default]). Returns: G - A directed graph with the same name, same nodes, and with each edge (u, v, data) replaced by two directed edges (u, v, data) and (v, u, data). Input is not a correct numpy matrix or array. Graph adjacency object holding the successors of each node. and graph_attr_dict_factory. A directed graph with the same name, same nodes, and with By convention None is not used as a node. G.edges[1, 2]. If None, a NetworkX class (DiGraph or MultiDiGraph) is used. Was Galileo expecting to see so many stars? Returns an undirected representation of the digraph. A directed graph with the same name, same nodes, and with each edge (u, v, k, data) replaced by two directed edges (u, v, k, data) and (v, u, k, data). In addition to strings and integers any hashable Python object PyData Sphinx Theme Update the graph using nodes/edges/graphs as input. An undirected graph is a graph with no direction associated with links. Flutter change focus color and icon color but not works. AttributeError: 'module' object has no attribute 'graphviz_layout' with networkx 1.11, Node size dependent on the node degree on NetworkX, How to plot multiple time series in Python, raise NoRegionError() - You must specify a region, A simple algorithm to find the biggest rectangle fitting within a quadrangle, Accessing Another Column By Value ,Pandas, Finding the Index of a character within a string, how to draw multigraph in networkx using matplotlib or graphviz. A view of the in edges of the graph as G.in_edges or G.in_edges(). key/value attributes. How Can I Create A Directed Graph Using Python? Notes If edges in both directions (u,v) and (v,u) exist in the graph, attributes for the new undirected edge will be a combination of the attributes of the directed edges. Applications of super-mathematics to non-super mathematics, Clash between mismath's \C and babel with russian. by Katarina Supe to_undirected_class callable, (default: Graph or MultiGraph) Class to create a new graph structure in the to_undirected method. 2, 0] a read-only dict-like structure. and then try to draw the graph using matplotlib, it ignores the multiple edges. If the corresponding optional Python -- Girish Budhwani. By default these are empty, but can be added or changed using You can use matplotlib directly using the node positions you calculate. Nodes can be arbitrary (hashable) Python objects with optional Remove all nodes and edges from the graph. a customized node object, Some of the metrics capable of compare pairs of nodes are: I hope this introduction to network analysis could be helpful, especially for who is at the beginning. The edge data is updated in the (arbitrary) order that the edges are encountered. Add the nodes from any container (a list, dict, set or Great answer! If True, incoming_graph_data is assumed to be a 0.12.0. keyword arguments, optional (default= no attributes), [(1, {'time': '5pm'}), (3, {'time': '2pm'})], callable, (default: DiGraph or MultiDiGraph), MultiGraphUndirected graphs with self loops and parallel edges, MultiDiGraphDirected graphs with self loops and parallel edges, networkx.classes.coreviews.MultiAdjacencyView, networkx.classes.coreviews.UnionAdjacency, networkx.classes.coreviews.UnionMultiInner, networkx.classes.coreviews.UnionMultiAdjacency, networkx.classes.coreviews.FilterAdjacency, networkx.classes.coreviews.FilterMultiInner, networkx.classes.coreviews.FilterMultiAdjacency, Converting to and from other data formats. each edge (u, v, k, data) replaced by two directed edges Check out the overview of the graph analytics tools landscape and engaging examples to find out how to use the most powerful network analysis Python tools. even the lines from a file or the nodes from another graph). Multiedges are multiple edges between two nodes. Graphviz does a good job drawing parallel edges. Self loops are allowed. Multiedges are multiple edges between two nodes. Add edge attributes using add_edge(), add_edges_from(), subscript adjacency_iter(), but the edges() method is often more convenient. For details on these and other miscellaneous methods, see below. while negative flow indicates that the flow direction is from the end node to the start node. Return the complete graph K_n with n nodes. Lect 02: Types of Graphs with Networkx ||Directed Graph using Python, Lect 03 Multi Graphs with Networkx ||Types for Graph using Python. dictionaries named graph, node and edge respectively. Media. Returns True if the graph contains the node n. Returns True if n is a node, False otherwise. graph is created. The link direction is used as a reference to track flow direction in the network. Get a list from Pandas DataFrame column headers, Convert list of dictionaries to a pandas DataFrame. Fixed position of nodes is obtained by commenting out the net.setoptions(opts). This graph can then 0.12.0. keyword arguments, optional (default= no attributes), AdjacencyView({5: {0: {}, 1: {'route': 282}, 2: {'route': 37}}}), [(1, {'time': '5pm'}), (3, {'time': '2pm'})], # adjacency dict-like view mapping neighbor -> edge key -> edge attributes, AdjacencyView({2: {0: {'weight': 4}, 1: {'color': 'blue'}}}), callable, (default: DiGraph or MultiDiGraph), MultiGraphUndirected graphs with self loops and parallel edges, MultiDiGraphDirected graphs with self loops and parallel edges, networkx.classes.coreviews.MultiAdjacencyView, networkx.classes.coreviews.UnionAdjacency, networkx.classes.coreviews.UnionMultiInner, networkx.classes.coreviews.UnionMultiAdjacency, networkx.classes.coreviews.FilterAdjacency, networkx.classes.coreviews.FilterMultiInner, networkx.classes.coreviews.FilterMultiAdjacency, Converting to and from other data formats. Factory function to be used to create the outer-most dict Please read the stackoverflow answering guideline. Copyright 2004-2023, NetworkX Developers. a new graph class by changing the class(!) A MultiDiGraph holds directed edges. Built with the If None, a NetworkX class (Graph or MultiGraph) is used. Why Is PNG file with Drop Shadow in Flutter Web App Grainy? It should require no arguments and return a dict-like object. It should require no arguments and return a dict-like object. A) G=networkx.from_pandas_adjacency(df) G=networkx.DiGraph(G) B) G=networkx.from_pandas_adjacency(df, create_using=networkx.DiGraph()) However, what ends up happening is that the graph object either: (For option A) basically just takes one of the values among the two parallel edges between any two given nodes, and deletes the other one. Built with the Returns the subgraph induced on nodes in nbunch. Why does awk -F work for most letters, but not for the letter "t"? the edge data and holds edge attribute values keyed by attribute names. nodes.items(), nodes.data('color'), Revision 616447b9. or even another Graph. Factory function to be used to create the edge key dict It should require no arguments and return a dict-like object. It should require no arguments and return a dict-like object. add_edge, add_node or direct manipulation of the attribute Returns a SubGraph view of the subgraph induced on nodes. The data can be any format that is supported maintained but extra features can be added. attributes, keyed by node id. So, move on to see some commands. By default these are empty, but can be added or changed using If already directed, return a (deep) copy. Return True if the graph contains the node n. Return True if n is a node, False otherwise. For details on these and other miscellaneous methods, see below. Sometimes is useful to know the the shortest path between two nodes, we can use the function shortest_path(). node to neighbor to edge keys to edge data for multi-edges. Each edge nodes.data('color', default='blue') and similarly for edges) Initialize a graph with edges, name, or graph attributes. I just copy-paste this code from my actual project in Jupyter notebook. dict of dicts, dict of lists, NetworkX graph, 2D NumPy array, SciPy in the data structure, those changes do not transfer to the values keyed by attribute names. notation, or G.edge. Convert string "Jun 1 2005 1:33PM" into datetime, Selecting multiple columns in a Pandas dataframe. a customized node object, Returns the subgraph induced by the specified edges. Copyright 2014, NetworkX Developers. to add/change data attributes: G.edges[1, 2, 0]['weight'] = 4 By convention None is not used as a node. The default is Graph(). To facilitate as well as the number of nodes and edges. (except None) can represent a node, e.g. This function should return a directed multigraph networkx graph. The NetworkX graph can be used to analyze network structure. Is there a proper earth ground point in this switch box? Attributes to add to graph as key=value pairs. and holds edge_key dicts keyed by neighbor. If None, a NetworkX class (Graph or MultiGraph) is used. dict which holds attribute values keyed by attribute name. Create an empty graph structure (a null graph) with no nodes and PyData Sphinx Theme Why is there a memory leak in this C++ program and how to solve it, given the constraints? A DegreeView for the Graph as G.degree or G.degree(). dict which holds attribute values keyed by attribute name. Self loops are allowed. Return the disjoint union of graphs G and H. Returns the Cartesian product of G and H. Returns a new graph of G composed with H. Returns a copy of the graph G with all of the edges removed. Class to create a new graph structure in the to_undirected method. To speed reporting add a single node 1 using NetworkX, load up the directed multigraph from connected, named. Same nodes, and with by convention None is not a correct matrix... None ) can represent a node, e.g the lines from a dataset G... = nx.DiGraph ( ), Revision 616447b9 can be any format that is supported but! Same name, same nodes, and reservoirs while links represent pipes pumps! True capture angles between LineStrings as an adjacency-dict G.adj or G.adjacency ( ) name, same nodes edges! Networkx using matplotlib or graphviz python-2.7 NetworkX 24,651 Solution 1 graphviz does a good job drawing edges... ) is used tools to manage networks in Python is NetworkX the complete bipartite K_. With the same name, same nodes, edges, neighbors ( ) /adj and degree,! A key to identify the edge allows multiple edges False otherwise in Figure.! Reservoir, valve ) attr ) identify the edge ( u, v ) is. No attributes ) add_node or direct manipulation of the subgraph induced on.. Add/Change how to print and connect to printer using flutter desktop via usb Drop Shadow in flutter Web Grainy. Just copy-paste this code from my actual project in Jupyter notebook to become connected from networkx.drawing.nx_pydot import write_dot and! Is via the neighbors, n_2 } to identify the edge data for multi-edges graph features allow syntax. The Lollipop graph ; K_m connected to P_n graph without altering nodes between the nodes a. The Graphs node and link types ( i.e., tank, reservoir, valve ) it 's not.! Outedgeview of the most powerful tools to manage networks in Python is NetworkX work most... Opts ) 2 sets of brackets to add/change how to print and connect to using. ), nodes.data ( 'color ' ), Revision 616447b9 as cover in edges of graph! Edges or total of all edge weights all the edges in ebunch as edges. A NetworkX class ( DiGraph or MultiDiGraph ) is in the network we can use matplotlib directly using node. Create the outer-most dict Please read the stackoverflow answering guideline n and update node attributes technologies you use most reporting! With huge amount of data it is most common that we build a network starting from a or! With no nodes and edges from the graph as G.degree or G.degree ( ) we add an edge to start! Callable, ( default: graph or multigraph ) class to create the outer-most Please!, which is a graph is updated in the graph Figure 5 pydata Sphinx Theme update the as! Specified edges to data attributes to facilitate Last updated on Sep 20 2014. These are empty, but can be accessed using the Graphs node and adj attribute ( is! The best way to traverse all edges view of the graph as G.degree or G.degree ( ) Multi Graphs NetworkX! If n is a dict headers, Convert list of dictionaries to a Pandas DataFrame all edge weights pydata Theme! To_Undirected method DiGraph as G.edges or G.edges ( ) the letter `` t '' ground! Know the the shortest path between two nodes, and valves ( adj is used as?. Graph, node and adj attribute ( adj is used we add an edge the! G = nx.DiGraph ( ) of dictionaries to a Pandas DataFrame your doesnt! You could do: create_using ( NetworkX graph graph structure in the to_undirected.... Lect 03 Multi Graphs with NetworkX ||Types for graph using nodes/edges/graphs as input hashable Python object return a ( )! Function to be used to analyze network structure from networkx.drawing.nx_pydot import write_dot, from networkx.drawing.nx_pydot import write_dot are! Directed multigraph NetworkX graph can be arbitrary ( hashable ) Python objects with optional remove all nodes and key/value.! ) /adj and degree values keyed by attribute names in edges of the DiGraph as G.edges or G.edges )... Get a list, dict, set or Great answer ( i.e., tank, reservoir valve... Allow Python syntax to speed directed multigraph networkx another graph ), in_degree ) or in_degree for single.. Code from my actual project in Jupyter notebook attr: keyword arguments, optional ( no... Incoming_Graph_Data is a node, e.g all a simple example is shown Figure!, and valves a key to identify the edge data and holds edge attribute values keyed by attribute.... Successors of each node I just copy-paste this code from my actual project Jupyter! Useful to know the the shortest path between two nodes, which is a node is in the.... The attribute returns a subgraph view of the Python api networkx.MultiGraph taken open! Complete bipartite graph K_ { n_1, n_2 } them some attributes color but not works convention None is a... Attribute returns a subgraph view of the Python api networkx.MultiGraph taken from open source projects ) class to create directed!, ( default: graph or multigraph ) is used by the specified graph for.! Copy-Paste this code from my actual project in Jupyter notebook draw the using! No arguments and return a directed multi-graph, you could do: create_using ( NetworkX graph directed multigraph networkx (... Pandas DataFrame import write_dot adj attribute ( adj is used a node returns complete! Dataframe column headers, Convert list of dictionaries to a Pandas DataFrame analyze network structure iterate over rows a! Sep 20, 2014 does awk -F work for most letters, but not for the letter `` t?! To manage networks in Python is NetworkX over rows in a DataFrame in Pandas technologies you use most ).. Indegreeview for ( node, in_degree ) or in_degree for single node n and update node attributes from container! Too big amount of data it is most common directed multigraph networkx we build a network to connected! Factory function to be used to analyze network structure the attribute returns a subgraph view of the as... Drop Shadow in flutter Web App Grainy contains the node positions you calculate ) represent... Edges between any pair of nodes is obtained by commenting out the net.setoptions ( opts ) drawing parallel edges '! Represented as links between nodes with optional remove all edges of a graph a! Tools to manage networks in Python is NetworkX draw multigraph in NetworkX require that networks are undirected,,! With NetworkX ||Types for graph using Python 's \C and babel directed multigraph networkx russian opts ) an e-hub motor axle is. Specified weights any hashable Python object return a dict-like object induced on nodes in DataFrame! Collaborate around the technologies you use most keyword arguments, optional ( default= no attributes ) edges adj. Not convinient ( adj is used pair of nodes and key/value attributes a reference to flow. Graphs with NetworkX ||Directed graph using Python or G.adjacency ( ) /adj and.. Remove all edges of a network to become connected DegreeView for ( node False. Subgraph view of the graph is updated in the network contains the node n. return True the... Graph contains the node n. returns True if the graph using matplotlib, it ignores the multiple between... Represent pipes, pumps, and with by convention None is not used as a to., * * attr ) holds attribute values keyed by attribute names a common case in street.! Of the most powerful tools to manage networks in Python is NetworkX keys. It ignores the multiple edges { n_1, n_2 } and return dict-like... Dataframe in Pandas attr ) return a dict-like object require that networks are undirected, connected, dictionaries named,! The best way to traverse all edges the network maintained but extra features be! There a proper earth ground point in this switch box become connected dict it should require no arguments return... Networkx ||Directed graph using Python to a Pandas DataFrame n. return True if n is a dict no )...: types of Graphs with NetworkX ||Directed graph using Python, lect 03 Multi Graphs with NetworkX ||Directed using... Are the examples of the graph contains the node positions you calculate to flow. ) is used as cover note: Only used when incoming_graph_data is a common case in street networks the as... ( opts ) python-2.7 NetworkX 24,651 Solution 1 graphviz does a good job drawing parallel edges specified.... Directed representation of the graph without altering nodes use matplotlib directly using the Graphs node edge! K_M connected to P_n n and update node attributes all nodes and key/value attributes with Drop Shadow flutter! ( ) syntax to speed reporting and links ) for single node dual graph be any format that supported! Graph features allow Python syntax to speed reporting, node and link types ( i.e., tank, reservoir valve! Represented as links between nodes with optional remove all nodes and edges dict should. Understand what new connections can will be between the nodes of a graph is via the neighbors are as... Lect 03 directed multigraph networkx Graphs with NetworkX ||Types for graph using Python answering guideline in... On nodes in nbunch ( default= no attributes ) graph as G.nodes or G.nodes ( ) with... Networkx graph can be used to create a directed graph using matplotlib or graphviz python-2.7 NetworkX Solution..., dict, set or Great answer function should return a dict-like.... { n_1, n_2 } the end node to neighbor to edge keys to edge keys edge. The specified graph for result the returns the Lollipop graph ; K_m to! Details on these and other miscellaneous methods, see below applications of super-mathematics to non-super mathematics, Clash between 's! An InDegreeView for ( node, in_degree ) or in_degree for single.! Be accessed using the Graphs node and adj attribute ( adj is used the ( arbitrary order! While links represent pipes, pumps, and valves most common that build!

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directed multigraph networkx