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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Not possible to run embed_tests on Ubuntu","articleBody":"### Environment\r\n\r\n-   Pythonnet version: 2.3.0\r\n-   Python version: ~~3.5~~ 3.4\r\n-   Operating System: Ubuntu 14.04.04 64-bit\r\n-   Mono 4.6\r\n\r\n### Details\r\n\r\n-   Describe what you were trying to get done.\r\nI am trying to run embed_tests, but they do not run and I get 136 errors like:\r\n18) SetUp Error : Python.EmbeddingTest.TestPyInt\r\nSystem.EntryPointNotFoundException : Py_IsInitialized\r\n  at (wrapper managed-to-native) Python.Runtime.Runtime:Py_IsInitialized ()\r\n  at Python.Runtime.Runtime.Initialize () [0x00001] in \u003c6f2b25faa20d4740b2ac949a9317c3ed\u003e:0 \r\n  at Python.Runtime.PythonEngine.Initialize (System.Collections.Generic.IEnumerable`1[T] args, System.Boolean setSysArgv) [0x00016] in \u003c6f2b25faa20d4740b2ac949a9317c3ed\u003e:0 \r\n  at Python.Runtime.PythonEngine.Initialize (System.Boolean setSysArgv) [0x00006] in \u003c6f2b25faa20d4740b2ac949a9317c3ed\u003e:0 \r\n  at Python.Runtime.PythonEngine.Initialize () [0x00001] in \u003c6f2b25faa20d4740b2ac949a9317c3ed\u003e:0 \r\n  at Python.EmbeddingTest.TestPyInt.SetUp () [0x00001] in \u003cfb18ab2ca6224ea4bbb4fe4442bf4679\u003e:0 \r\n  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception\u0026)\r\n  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00038] in \u003c8f2c484307284b51944a1a13a14c0266\u003e:0 \r\n\r\nThe main point is here: \"Py_IsInitialized\" entry point is not found. The bug is that pythonnet does load \"__Internal\" library instead of libpython3.4m.so. This happens because setup.py detects if /usr/bin/python3 does link to \".so\" and if not then load \"__Internal\". But this is wrong logic, because loading \"__Internal\" doesn't make any sense. Never. On Ubuntu Python Interpreter do not load libpythonXXX.so (is statically linked), but library libpythonXXX.so exists !\r\n\r\nThere are generally 2 cases on Linux:\r\n1. pythonnet is loaded from Python Interpreter (for example /usr/bin/python3 application)\r\nHow to check: try to resolve entry \"Py_IsInitialized\" in main application. If resolved then skip (2)\r\n2. pythonnet is loaded from .NET Application\r\nHow to check: if (1) fails then it is the case. Try to load Python library (libpythonXXX.so) in this case.\r\n\r\n-   What commands did you run to trigger this issue? If you can provide a\r\n    [Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve)\r\n    this will help us understand the issue.\r\n\u003e nunit3-console.exe --noresult Python.EmbeddingTest.dll\r\n","author":{"url":"https://github.com/testrunner123","@type":"Person","name":"testrunner123"},"datePublished":"2017-06-13T07:50:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/489/pythonnet/issues/489"}