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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Failed to load symbol PyDictProxy_New","articleBody":"### Environment\r\n\r\n-   Pythonnet version: Newest, built from github - commit f2dc8f19c1dcf3a6735d5d9bdabd83ab69121b88\r\n-   Python version: ??\r\n-   Operating System: Windows 10\r\n-   .NET Runtime: .net framework 4.5\r\n\r\n### Details\r\n\r\nHi, I'm trying to switch from IronPython to pythonnet in my [project](https://github.com/Strdate/PythonConsole). Unfortunately, I can't make the engine work.\r\n\r\nI'm trying to create the engine like this, but it throws an exception:\r\n\r\n```\r\npublic class PythonEngine : IDisposable\r\n    {\r\n        private ClientHandler client;\r\n\r\n        private Py.GILState _engine;\r\n        private PyScope _scope;\r\n        private GameAPI _gameAPI;\r\n\r\n        public PythonEngine(ClientHandler client)\r\n        {\r\n            this.client = client;\r\n            _engine = Py.GIL();\r\n            _scope = Py.CreateScope();\r\n            _gameAPI = new GameAPI(client, _scope);\r\n\r\n            PrepareStaticLocals();\r\n            \r\n            var outputStream = new MemoryStream();\r\n            var outputStreamWriter = new TcpStreamWriter(outputStream, client);\r\n            //_engine.Runtime.IO.SetOutput(outputStream, outputStreamWriter);\r\n        }\r\n...\r\n}\r\n```\r\nI am not wrapping the code in `using` statement because I need to use the same scope later in the code (I dispose it manually instead). Anyway, the code throws this exception:\r\n\r\n```\r\nSystem.TypeInitializationException: Inicializační metoda typu Delegates vyvolala výjimku. ---\u003e System.MissingMethodException: Failed to load symbol PyDictProxy_New ---\u003e System.ComponentModel.Win32Exception: Uvedená procedura nebyla nalezena\r\n   --- Konec trasování zásobníku pro vnitřní výjimku ---\r\n   v Python.Runtime.Platform.WindowsLoader.GetFunction(IntPtr hModule, String procedureName)\r\n   v Python.Runtime.Runtime.Delegates.GetFunctionByName(String functionName, IntPtr libraryHandle)\r\n   v Python.Runtime.Runtime.Delegates..cctor()\r\n   --- Konec trasování zásobníku pro vnitřní výjimku ---\r\n   v Python.Runtime.Runtime.Delegates.get_Py_IsInitialized()\r\n   v Python.Runtime.Runtime.Py_IsInitialized()\r\n   v Python.Runtime.Runtime.Initialize(Boolean initSigs, ShutdownMode mode)\r\n   v Python.Runtime.PythonEngine.Initialize(IEnumerable`1 args, Boolean setSysArgv, Boolean initSigs, ShutdownMode mode)\r\n   v Python.Runtime.PythonEngine.Initialize(Boolean setSysArgv, Boolean initSigs, ShutdownMode mode)\r\n   v Python.Runtime.PythonEngine.Initialize()\r\n   v Python.Runtime.Py.GIL()\r\n   v SkylinesRemotePython.PythonEngine..ctor(ClientHandler client)\r\n   v SkylinesRemotePython.ClientHandler.HandleClient()\r\n```\r\n\r\nWhat am I doing wrong?\r\n\r\nThere are a few key things that I don't understand about pythonnet, which may or may not be connected to this issue. First, do I need to have Python installed on my computer? IronPython apparently works as standalone library, but I don't know how about pythonnet.\r\n\r\nWhich files do I need to ship with my program? `Python.Runtime.dll`, `System.Security.AccessControl.dll`, `System.Security.Permissions.dll`, `System.Security.Principal.Windows.dll`\r\n\r\nThanks :)","author":{"url":"https://github.com/Strdate","@type":"Person","name":"Strdate"},"datePublished":"2021-03-07T11:10:20.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/1410/pythonnet/issues/1410"}