{"action":"created","issue":{"url":"https://api.github.com/repos/igraph/python-igraph/issues/172","repository_url":"https://api.github.com/repos/igraph/python-igraph","labels_url":"https://api.github.com/repos/igraph/python-igraph/issues/172/labels{/name}","comments_url":"https://api.github.com/repos/igraph/python-igraph/issues/172/comments","events_url":"https://api.github.com/repos/igraph/python-igraph/issues/172/events","html_url":"https://github.com/igraph/python-igraph/issues/172","id":319019386,"number":172,"title":"Graph.Read_GraphML error","user":{"login":"zzzkk","id":12541603,"avatar_url":"https://avatars2.githubusercontent.com/u/12541603?v=4","gravatar_id":"","url":"https://api.github.com/users/zzzkk","html_url":"https://github.com/zzzkk","followers_url":"https://api.github.com/users/zzzkk/followers","following_url":"https://api.github.com/users/zzzkk/following{/other_user}","gists_url":"https://api.github.com/users/zzzkk/gists{/gist_id}","starred_url":"https://api.github.com/users/zzzkk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zzzkk/subscriptions","organizations_url":"https://api.github.com/users/zzzkk/orgs","repos_url":"https://api.github.com/users/zzzkk/repos","events_url":"https://api.github.com/users/zzzkk/events{/privacy}","received_events_url":"https://api.github.com/users/zzzkk/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-04-30T20:12:14Z","updated_at":"2018-05-02T12:54:04Z","closed_at":null,"author_association":"NONE","body":"I have a problem with reading graphml files (and other e.g. pajek)\r\nEvery attempt ends with this message:\r\n\r\n> ---------------------------------------------------------------------------\r\n> SystemError                               Traceback (most recent call last)\r\n> <ipython-input-13-00252a08a792> in <module>()\r\n> ----> 1 g = Graph.Read_GraphML(\"../../data_sample/temp.GraphML\")\r\n> \r\n> SystemError: <built-in method Read_GraphML of type object at 0x000001598920D5E8> returned NULL without setting an error\r\n\r\n-  python 3.6\r\n-  Windows 10 (on MacOS is fine)\r\n-  file structure is correct (for sure)\r\n-  python-igraph version: _`python_igraph‑0.7.1.post6‑cp36‑cp36m‑win32.whl`_ (couldn't install with pip because of C core error)"},"comment":{"url":"https://api.github.com/repos/igraph/python-igraph/issues/comments/385967544","html_url":"https://github.com/igraph/python-igraph/issues/172#issuecomment-385967544","issue_url":"https://api.github.com/repos/igraph/python-igraph/issues/172","id":385967544,"user":{"login":"ntamas","id":195637,"avatar_url":"https://avatars2.githubusercontent.com/u/195637?v=4","gravatar_id":"","url":"https://api.github.com/users/ntamas","html_url":"https://github.com/ntamas","followers_url":"https://api.github.com/users/ntamas/followers","following_url":"https://api.github.com/users/ntamas/following{/other_user}","gists_url":"https://api.github.com/users/ntamas/gists{/gist_id}","starred_url":"https://api.github.com/users/ntamas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ntamas/subscriptions","organizations_url":"https://api.github.com/users/ntamas/orgs","repos_url":"https://api.github.com/users/ntamas/repos","events_url":"https://api.github.com/users/ntamas/events{/privacy}","received_events_url":"https://api.github.com/users/ntamas/received_events","type":"User","site_admin":false},"created_at":"2018-05-02T12:54:04Z","updated_at":"2018-05-02T12:54:04Z","author_association":"OWNER","body":"The file seems to be okay on my machine as well. Unfortunately I cannot test it further on Windows because I don't use Windows myself and I have no access to Windows machines at all. Someone would need to compile the latest revision of python-igraph on Windows and see if the issue persists there; currently I lack the necessary spare time to do this.\r\n\r\nThe message that you see above basically explains everything: you would need to compile the C core of igraph first (`python-igraph` is just an interface to the C core, which can be downloaded separately at https://igraph.org), then tell setup.py where the C core was compiled and installed."}}
{"actor":{"display_login":"ntamas"}}