I am reading an edge list from a file, and then from a different file I am reading an attribute called "date" which exists for some nodes. Note that some nodes in the edge list file do NOT have the "date" attribute.
However, when I check a few lines later whether the attribute exists for all the nodes which DO have the "date" attribute, my assertions fail for some nodes. Why is this happening?
The check for whether the nodeID starts with "11" is specific to the dataset, and is irrelevant to the issue I am facing (or at least I think it is irrelevant?).
My code:
import networkx as nx# Load edgesG = nx.read_edgelist("edges.txt", nodetype=int, create_using=nx.DiGraph)# Verify load was rightprint("Number of nodes:", G.order())print("Number of edges:", G.size())print()num_dates = 0num_useless = 0with open("node-dates.txt") as f: for line in f: if line[0] == "#": continue nodeID = line.split()[0] if nodeID[:2]=="11": nodeID = int(nodeID[2:]) if int(nodeID) in G: num_dates += 1 else: num_useless += 1 G.add_node(int(nodeID)) G.nodes[int(nodeID)]["date"] = line.split()[1] # This below assert passes assert(G.nodes[int(nodeID)]["date"] == line.split()[1])print("Number of nodes:", G.order())print("Number of nodes with dates:", num_dates+num_useless)print("Number of nodes with dates and edges:", num_dates)print("Number of nodes with dates but no edges:", num_useless)print("Number of nodes with edges but no dates:", G.order()-num_dates-num_useless)count_failed_assert = 0with open("node-dates.txt") as f: for line in f: if line[0] == "#": continue nodeID = line.split()[0] if nodeID[:2]=="11": nodeID = int(nodeID[2:]) try: # But this assert fails? assert(G.nodes[int(nodeID)]["date"] == line.split()[1]) except: count_failed_assert += 1print(count_failed_assert)The output:
Number of nodes: 34546Number of edges: 421578Number of nodes: 39951Number of nodes with dates: 38557Number of nodes with dates and edges: 33152Number of nodes with dates but no edges: 5405Number of nodes with edges but no dates: 13942446