BadSourceException being raised

[brettcannon]

microsoft/vscode-python#2501

Reloading modules...

Unhandled Exception: Microsoft.PythonTools.Parsing.BadSourceException: Exception of type 'Microsoft.PythonTools.Parsing.BadSourceException' was thrown.
   at Microsoft.PythonTools.Interpreter.Ast.AstPythonInterpreter.ImportModule(String name)
   at Microsoft.PythonTools.Interpreter.Ast.AstNestedPythonModule.GetModule()
   at Microsoft.PythonTools.Interpreter.Ast.AstNestedPythonModule.GetChildrenModules()
   at Microsoft.PythonTools.Analysis.ModuleTable.ReInit()
   at Microsoft.PythonTools.Analysis.LanguageServer.Server.Interpreter_ModuleNamesChanged(Object sender, EventArgs e)
   at Microsoft.PythonTools.Interpreter.Ast.AstPythonInterpreterFactory.NotifyImportNamesChanged()
   at Microsoft.PythonTools.Analysis.PythonAnalyzer.ReloadModulesAsync(CancellationToken token)
   at Microsoft.PythonTools.Analysis.LanguageServer.Server.ReloadModulesQueueItem.Analyze(CancellationToken cancel)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.PythonTools.Analysis.LanguageServer.Server.ReloadModulesAsync(CancellationToken token)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
[Info  - 3:42:56 PM] Connection to server got closed. Server will restart.
Initializing for /home/cllamach/.virtualenvs/panopta_env/bin/python

[MikhailArkhipov]

BadSourceException means file contains characters that are out of declared encoding. Such as characters over 0x7F in file that is considered ASCII.

defaultEncoding = version.Is2x() ? PythonAsciiEncoding.Instance : Encoding.UTF8

[MikhailArkhipov]

No need to convert in any special way since host/client (VS Code) will open py files as all others, in UTF-8, will convert them to Unicode and give LS the buffer. It is possible in VSC to enter any character in the file irrespective to what version of Python is currently selected and save the file. So there is no need to do any special checks on files that LS may be opening on its own (such as imports).