Analysis engine terminates with "no iterator type for" #1978
Description
Environment data
- VS Code version: 1.25.0-insider
- Extension version (available under the Extensions sidebar): current nightly
- OS and version: macOS
- Python version: 2.7.15 (see comment below)
- Type of virtual environment used: direnv
layout python(virtualenv) - Relevant/affected Python packages and their versions: N/A
Actual behavior
The extension terminates right after starting. Unfortunately I can't share the source as it's covered by an NDA.
I'm using the current master of PTVS to test (7eab53bf9f0fd9fd01e366dcf8ede77e738a003e).
Expected behavior
Analysis engine works.
Logs
Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)
[Info - 12:20:19] Created Microsoft.PythonTools.Interpreter.Ast.AstPythonInterpreter instance from Microsoft.PythonTools.Interpreter.Ast.AstPythonInterpreterFactory
Initializing for /Users/patrys/GitHub/redacted/redacted/.direnv/python-2.7.15/bin/python
Loading files from /Users/patrys/GitHub/redacted/redacted
Assertion Failed
No iterator type for Microsoft.PythonTools.Interpreter.Ast.AstPythonType (list::Type
at Microsoft.PythonTools.Analysis.Values.BaseIteratorValue.GetIteratorTypeFromType(BuiltinClassInfo klass, AnalysisUnit unit) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Values/IteratorInfo.cs:line 62
at Microsoft.PythonTools.Analysis.Values.IterableValue.MakeIteratorInfo(Node n, AnalysisUnit unit) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Values/IterableInfo.cs:line 159
at Microsoft.PythonTools.Analysis.Values.BaseIterableValue.<>c__DisplayClass12_0.<IterableIter>b__0(Node n) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Values/IterableInfo.cs:line 78
at Microsoft.PythonTools.Analysis.Analyzer.InterpreterScope.GetOrMakeNodeValue(Node node, NodeValueKind kind, Func`2 maker) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/InterpreterScope.cs:line 379
at Microsoft.PythonTools.Analysis.Values.BaseIterableValue.IterableIter(Node node, AnalysisUnit unit, IAnalysisSet[] args, NameExpression[] keywordArgNames) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Values/IterableInfo.cs:line 75
at Microsoft.PythonTools.Analysis.Values.SpecializedCallable.Call(Node node, AnalysisUnit unit, IAnalysisSet[] args, NameExpression[] keywordArgNames) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Values/SpecializedCallable.cs:line 49
at Microsoft.PythonTools.Analysis.AnalysisValueSetExtensions.Call(IAnalysisSet self, Node node, AnalysisUnit unit, IAnalysisSet[] args, NameExpression[] keywordArgNames) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/AnalysisValueSetExtensions.cs:line 79
at Microsoft.PythonTools.Analysis.AnalysisValue.GetIterator(Node node, AnalysisUnit unit) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/AnalysisValue.cs:line 272
at Microsoft.PythonTools.Analysis.AnalysisValueSetExtensions.GetIterator(IAnalysisSet self, Node node, AnalysisUnit unit) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/AnalysisValueSetExtensions.cs:line 96
at Microsoft.PythonTools.Analysis.PythonAnalyzer.SpecialIter(Node node, AnalysisUnit unit, IAnalysisSet[] args, NameExpression[] keywordArgNames) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/PythonAnalyzer.Specializations.cs:line 380
at Microsoft.PythonTools.Analysis.Values.SpecializedCallable.Call(Node node, AnalysisUnit unit, IAnalysisSet[] args, NameExpression[] keywordArgNames) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Values/SpecializedCallable.cs:line 49
at Microsoft.PythonTools.Analysis.Analyzer.ExpressionEvaluator.EvaluateCall(ExpressionEvaluator ee, Node node) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/ExpressionEvaluator.cs:line 388
at Microsoft.PythonTools.Analysis.Analyzer.ExpressionEvaluator.EvaluateWorker(Node node) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/ExpressionEvaluator.cs:line 220
at Microsoft.PythonTools.Analysis.Analyzer.ExpressionEvaluator.Evaluate(Expression node) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/ExpressionEvaluator.cs:line 56
at Microsoft.PythonTools.Analysis.Analyzer.DDG.Walk(ReturnStatement node) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/DDG.cs:line 529
at Microsoft.PythonTools.Parsing.Ast.ReturnStatement.Walk(PythonWalker walker) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Parsing/Ast/ReturnStatement.cs:line 32
at Microsoft.PythonTools.Analysis.Analyzer.DDG.Walk(SuiteStatement node) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/DDG.cs:line 597
at Microsoft.PythonTools.Parsing.Ast.SuiteStatement.Walk(PythonWalker walker) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Parsing/Ast/SuiteStatement.cs:line 34
at Microsoft.PythonTools.Analysis.Analyzer.FunctionAnalysisUnit.AnalyzeWorker(DDG ddg, CancellationToken cancel) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/FunctionAnalysisUnit.cs:line 89
at Microsoft.PythonTools.Analysis.AnalysisUnit.Analyze(DDG ddg, CancellationToken cancel) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/AnalysisUnit.cs:line 152
at Microsoft.PythonTools.Analysis.Analyzer.DDG.Analyze(Deque`1 queue, CancellationToken cancel, Action`1 reportQueueSize, Int32 reportQueueInterval) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Analyzer/DDG.cs:line 75
at Microsoft.PythonTools.Analysis.PythonAnalyzer.AnalyzeQueuedEntries(CancellationToken cancel) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/PythonAnalyzer.cs:line 946
at Microsoft.PythonTools.Intellisense.AnalysisQueue.GroupAnalysis.Analyze(CancellationToken cancel) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Intellisense/AnalysisQueue.cs:line 290
at Microsoft.PythonTools.Intellisense.AnalysisQueue.Worker(Object threadStarted) in /Users/patrys/GitHub/Microsoft/ptvs/Python/Product/Analysis/Intellisense/AnalysisQueue.cs:line 235
at System.Threading.Thread.ThreadMain_ParameterizedThreadStart(Object parameter)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
[Info - 12:20:35] Connection to server got closed. Server will restart.
Output from Console under the Developer Tools panel (toggle Developer Tools on under Help)
The Python Tools server crashed 5 times in the last 3 minutes. The server will not be restarted.