{"action":"closed","issue":{"url":"https://api.github.com/repos/benjamij/RubicsCube/issues/1","labels_url":"https://api.github.com/repos/benjamij/RubicsCube/issues/1/labels{/name}","comments_url":"https://api.github.com/repos/benjamij/RubicsCube/issues/1/comments","events_url":"https://api.github.com/repos/benjamij/RubicsCube/issues/1/events","html_url":"https://github.com/benjamij/RubicsCube/issues/1","id":75304957,"number":1,"title":"Problem with _add_node","user":{"login":"benjamij","id":5525812,"avatar_url":"https://avatars.githubusercontent.com/u/5525812?v=3","gravatar_id":"","url":"https://api.github.com/users/benjamij","html_url":"https://github.com/benjamij","followers_url":"https://api.github.com/users/benjamij/followers","following_url":"https://api.github.com/users/benjamij/following{/other_user}","gists_url":"https://api.github.com/users/benjamij/gists{/gist_id}","starred_url":"https://api.github.com/users/benjamij/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/benjamij/subscriptions","organizations_url":"https://api.github.com/users/benjamij/orgs","repos_url":"https://api.github.com/users/benjamij/repos","events_url":"https://api.github.com/users/benjamij/events{/privacy}","received_events_url":"https://api.github.com/users/benjamij/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-11T17:54:13Z","updated_at":"2015-05-12T00:53:14Z","closed_at":"2015-05-12T00:53:14Z","body":"In _add_node(), shouldn't the node only be added if it does not already exist in the nx Graph?\r\ni.e. before adding the node, perform a node_exists check?"}}