{"action":"created","issue":{"url":"https://api.github.com/repos/sympy/sympy/issues/9072","labels_url":"https://api.github.com/repos/sympy/sympy/issues/9072/labels{/name}","comments_url":"https://api.github.com/repos/sympy/sympy/issues/9072/comments","events_url":"https://api.github.com/repos/sympy/sympy/issues/9072/events","html_url":"https://github.com/sympy/sympy/pull/9072","id":59349750,"number":9072,"title":"Addition of Traces of MutableDenseMatrix","user":{"login":"lokeshh","id":7677524,"avatar_url":"https://avatars.githubusercontent.com/u/7677524?v=3","gravatar_id":"","url":"https://api.github.com/users/lokeshh","html_url":"https://github.com/lokeshh","followers_url":"https://api.github.com/users/lokeshh/followers","following_url":"https://api.github.com/users/lokeshh/following{/other_user}","gists_url":"https://api.github.com/users/lokeshh/gists{/gist_id}","starred_url":"https://api.github.com/users/lokeshh/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lokeshh/subscriptions","organizations_url":"https://api.github.com/users/lokeshh/orgs","repos_url":"https://api.github.com/users/lokeshh/repos","events_url":"https://api.github.com/users/lokeshh/events{/privacy}","received_events_url":"https://api.github.com/users/lokeshh/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-02-28T17:29:39Z","updated_at":"2015-03-03T22:27:32Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/sympy/sympy/pulls/9072","html_url":"https://github.com/sympy/sympy/pull/9072","diff_url":"https://github.com/sympy/sympy/pull/9072.diff","patch_url":"https://github.com/sympy/sympy/pull/9072.patch"},"body":"Addition of Trace(X) returned TypeError when X was\r\nMutableDenseMatrix. This was because MutableDenseMatrix\r\nwasn't hashable. This has been fixed by introducing\r\nhashable_content function for Trace. This function\r\nreturns sympify(X) which is hashable and hence making\r\nMutableDenseMatrix hashable.\r\n\r\nFixes: #9043 "},"comment":{"url":"https://api.github.com/repos/sympy/sympy/issues/comments/77050570","html_url":"https://github.com/sympy/sympy/pull/9072#issuecomment-77050570","issue_url":"https://api.github.com/repos/sympy/sympy/issues/9072","id":77050570,"user":{"login":"cbm755","id":818622,"avatar_url":"https://avatars.githubusercontent.com/u/818622?v=3","gravatar_id":"","url":"https://api.github.com/users/cbm755","html_url":"https://github.com/cbm755","followers_url":"https://api.github.com/users/cbm755/followers","following_url":"https://api.github.com/users/cbm755/following{/other_user}","gists_url":"https://api.github.com/users/cbm755/gists{/gist_id}","starred_url":"https://api.github.com/users/cbm755/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cbm755/subscriptions","organizations_url":"https://api.github.com/users/cbm755/orgs","repos_url":"https://api.github.com/users/cbm755/repos","events_url":"https://api.github.com/users/cbm755/events{/privacy}","received_events_url":"https://api.github.com/users/cbm755/received_events","type":"User","site_admin":false},"created_at":"2015-03-03T22:27:32Z","updated_at":"2015-03-03T22:27:32Z","body":"(Or if #9063 goes first, drop the XAIL here.)"}}