{"action":"opened","issue":{"url":"https://api.github.com/repos/ipython/ipython/issues/8606","labels_url":"https://api.github.com/repos/ipython/ipython/issues/8606/labels{/name}","comments_url":"https://api.github.com/repos/ipython/ipython/issues/8606/comments","events_url":"https://api.github.com/repos/ipython/ipython/issues/8606/events","html_url":"https://github.com/ipython/ipython/issues/8606","id":92928049,"number":8606,"title":"Look at switching to Jedi for completion machinery","user":{"login":"takluyver","id":327925,"avatar_url":"https://avatars.githubusercontent.com/u/327925?v=3","gravatar_id":"","url":"https://api.github.com/users/takluyver","html_url":"https://github.com/takluyver","followers_url":"https://api.github.com/users/takluyver/followers","following_url":"https://api.github.com/users/takluyver/following{/other_user}","gists_url":"https://api.github.com/users/takluyver/gists{/gist_id}","starred_url":"https://api.github.com/users/takluyver/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/takluyver/subscriptions","organizations_url":"https://api.github.com/users/takluyver/orgs","repos_url":"https://api.github.com/users/takluyver/repos","events_url":"https://api.github.com/users/takluyver/events{/privacy}","received_events_url":"https://api.github.com/users/takluyver/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"takluyver","id":327925,"avatar_url":"https://avatars.githubusercontent.com/u/327925?v=3","gravatar_id":"","url":"https://api.github.com/users/takluyver","html_url":"https://github.com/takluyver","followers_url":"https://api.github.com/users/takluyver/followers","following_url":"https://api.github.com/users/takluyver/following{/other_user}","gists_url":"https://api.github.com/users/takluyver/gists{/gist_id}","starred_url":"https://api.github.com/users/takluyver/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/takluyver/subscriptions","organizations_url":"https://api.github.com/users/takluyver/orgs","repos_url":"https://api.github.com/users/takluyver/repos","events_url":"https://api.github.com/users/takluyver/events{/privacy}","received_events_url":"https://api.github.com/users/takluyver/received_events","type":"User","site_admin":false},"milestone":{"url":"https://api.github.com/repos/ipython/ipython/milestones/25","html_url":"https://github.com/ipython/ipython/milestones/5.0","labels_url":"https://api.github.com/repos/ipython/ipython/milestones/25/labels","id":1020999,"number":25,"title":"5.0","description":"","creator":{"login":"Carreau","id":335567,"avatar_url":"https://avatars.githubusercontent.com/u/335567?v=3","gravatar_id":"","url":"https://api.github.com/users/Carreau","html_url":"https://github.com/Carreau","followers_url":"https://api.github.com/users/Carreau/followers","following_url":"https://api.github.com/users/Carreau/following{/other_user}","gists_url":"https://api.github.com/users/Carreau/gists{/gist_id}","starred_url":"https://api.github.com/users/Carreau/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Carreau/subscriptions","organizations_url":"https://api.github.com/users/Carreau/orgs","repos_url":"https://api.github.com/users/Carreau/repos","events_url":"https://api.github.com/users/Carreau/events{/privacy}","received_events_url":"https://api.github.com/users/Carreau/received_events","type":"User","site_admin":false},"open_issues":80,"closed_issues":0,"state":"open","created_at":"2015-03-13T21:27:20Z","updated_at":"2015-07-03T19:52:34Z","due_on":null,"closed_at":null},"comments":0,"created_at":"2015-07-03T19:52:34Z","updated_at":"2015-07-03T19:52:34Z","closed_at":null,"body":"Our current completion machinery is relatively old and brittle. I've been meaning to refactor it, but I've realised that the Python completion library *Jedi* has [support for completing in REPLs](https://jedi.readthedocs.org/en/latest/docs/plugin-api.html#jedi.api.Interpreter). We can probably use that and get rid of our own completion machinery entirely.\r\n\r\nOne minor concern is performance: I tried using jedi-vim at one stage, and found it slowed the editor down quite a bit. Hopefully it's better now.\r\n\r\nI'm interested in looking into this post 4.0."}}