Listing classes in a Python file

[mgunyho]

Hi, I'm trying to use gtoolkit to explore some Python code. I would like to open a Python file and use the LSP to get a list of all of the classes in the file. Here is my current attempt:

source := '
class Test:
    pass'.
path := '/tmp/gt-python-test/test.py' asFileReference.
path ensureCreateFile.
path writeStreamDo: [ :out | out nextPutAll: source ].

model := (GtLSPPythonModel onDirectory: path parent) files first.

classes := model classSymbols toArray wait.

However, at the last step, I get an AsyncFutureExecutionError which I don't understand:

The error message is "AssertionFailure: Block already polled". Am I doing something wrong when trying to wait the future?

[hellerve]

I cannot reproduce this. What version of Glamorous Toolkit is this on? And what OS? (Admittedly the latter shouldn’t matter, but I’m trying to narrow it down)

[mgunyho]

I'm using Fedora Linux 41. I tried with v1.0.1889 and also .1894, it happened in both. Both using ./bin/GlamorousToolkit-cli --enable-wayland --interactive image.image (see #4596 wrt wayland) and with the non-cli version.

I realized that there was some stdout/stderr output when the error occurs, here's the output:

output

[2025-06-26T05:54:02Z ERROR value_box::error] Error: There was an IO error
[2025-06-26T05:54:02Z ERROR value_box::error]  - No such file or directory (os error 2)
AsyncFutureExecutionError
AsyncStreamCollectFuture>>wait
UndefinedObject>>DoIt
[
		aGtPharoSourceCoderEvaluationContext receiverObject
			withArgs: methodArguments
			executeMethod: aCompiledMethodToEvaluate ] in GtPharoSnippetCoder(GtPharoSourceCoder)>>primitiveEvaluate:inContext:onFailDo: in Block: [...
[aBlock value] in GtProcessStackOverflowChecker class>>checkDuring: in Block: [aBlock value]
FullBlockClosure(BlockClosure)>>ensure:
GtProcessStackOverflowChecker class>>checkDuring:
GtPharoSnippetCoder(GtPharoSourceCoder)>>primitiveEvaluate:inContext:onFailDo:
[ 
		self
			primitiveEvaluate: aDecoratedSourceString
			inContext: aSourceCoderEvaluationContext
			onFailDo: [
				| aResultWithSyntaxError |

				aResultWithSyntaxError := GtSourceCoderEvaluationResultWithSyntaxError new
					evaluationContext: aSourceCoderEvaluationContext.
				aThenBlock cull: aResultWithSyntaxError.
				^ aResultWithSyntaxError ] ] in GtPharoSnippetCoder(GtSourceCoder)>>evaluate:decorated:inContext:thenDo: in Block: [ ...
FullBlockClosure(BlockClosure)>>on:do:
GtPharoSnippetCoder(GtSourceCoder)>>evaluateBlock:onErrorDo:
GtPharoSnippetCoder(GtSourceCoder)>>evaluate:decorated:inContext:thenDo:
GtPharoSnippetCoder(GtSourceCoder)>>evaluate:inContext:thenDo:
GtPharoSnippetCoder(GtSourceCoder)>>doItAndGoInContext:
[ 
		self coder doItAndGoInContext: self evaluationContext all ] in GtPharoSnippetCoderViewModel(GtSourceCoderViewModel)>>doItAndGoAll in Block: [ ...
[ activeProcess
			psValueAt: index
			put: anObject.
		aBlock value ] in GtCoderUserSnippetDynamicVariable(DynamicVariable)>>value:during: in Block: [ activeProcess...
FullBlockClosure(BlockClosure)>>ensure:
GtCoderUserSnippetDynamicVariable(DynamicVariable)>>value:during:
GtCoderUserSnippetDynamicVariable class(DynamicVariable class)>>value:during:
[ GtCoderUserSnippetDynamicVariable
			value: GtCoderUserSnippetEvaluationRunningState default
			during: aBlock ] in GtPharoSnippetCoderViewModel(GtSourceCoderViewModel)>>handleCoderEvaluationUnhandledErrorDuring: in Block: [ GtCoderUserSnippetDynamicVariable...
FullBlockClosure(BlockClosure)>>on:do:
GtPharoSnippetCoderViewModel(GtSourceCoderViewModel)>>handleCoderEvaluationUnhandledErrorDuring:
GtPharoSnippetCoderViewModel(GtSourceCoderViewModel)>>doItAndGoAll
GtPharoSnippetCoderViewModel(GtSourceCoderViewModel)>>doItAndGo
[ aSourceCoderViewModel doItAndGo ] in GtSourceCoderDoItAndInspectShortcut>>performOnEditor:element:coderViewModel:dueTo: in Block: [ aSourceCoderViewModel doItAndGo ]
[ activeProcess
			psValueAt: index
			put: anObject.
		aBlock value ] in GtCoderExecutionContextVariable(DynamicVariable)>>value:during: in Block: [ activeProcess...
FullBlockClosure(BlockClosure)>>ensure:
GtCoderExecutionContextVariable(DynamicVariable)>>value:during:
GtCoderExecutionContextVariable class(DynamicVariable class)>>value:during:
GtCoderExecutionContextVariable class>>element:do:
GtSourceCoderDoItAndInspectShortcut>>performOnEditor:element:coderViewModel:dueTo:
GtSourceCoderDoItAndInspectShortcut(GtSourceCoderShortcut)>>performOnEditor:element:dueTo:
GtSourceCoderDoItAndInspectShortcut(BrEditorShortcut)>>performDueTo:
[ :theShortcuts |
			| aShortcut |
			aShortcut := theShortcuts first key.
			"let users explicitely set consumed to false so it bubbles up"
			aShortcutEvent consumed: true.
			aShortcut performDueTo: aShortcutEvent ] in BlShortcutHandlerWithShortcuts>>handleShortcuts:suchThat: in Block: [ :theShortcuts |...
FullBlockClosure(BlockClosure)>>cull:
OrderedCollection(Collection)>>ifNotEmpty:
BlShortcutHandlerWithShortcuts>>handleShortcuts:suchThat:
BlShortcutHandlerWithShortcuts>>handleEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchArrivedEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlElementEventDispatcher(BlBubblingEventDispatcher)>>dispatchEvent:next:
BlEventDispatcherChain>>dispatchEvent:
BlEvent class>>fireEvent:target:
BlEvent class>>fireEvent:
BlKeyboardProcessor(BlBaseEventProcessor)>>fireEvent:
[ self fireEvent: aShortcutEvent ] in BlKeyboardProcessor>>processKeyDown: in Block: [ self fireEvent: aShortcutEvent ]
NullTelemetry>>time:during:
BlSpaceTelemetry>>time:during:
BlFrameTelemetry(BaseProcessTelemetry)>>time:during:
BlFrameTelemetry(BaseProcessTelemetry)>>timeSync:during:
BlFrameTelemetry class(BaseProcessTelemetry class)>>timeSync:during:
BlKeyboardProcessor>>processKeyDown:
BlSpaceEventListener>>keyDownEvent:
BlKeyDownEvent>>sendTo:
BlSpaceEventListener(BlEventListener)>>handleEvent:
BlSpaceEventListener>>handleEvent:
[GtPharoSnippetCoder] AsyncFutureExecutionError

[mgunyho]

Tried also with the latest version, 1904, same error.

[mgunyho]

Tried again today with GT 1.0.2224, this time on Fedora 42 KDE (using Wayland), the issue still occurs.

[mgunyho]

Okay, I found the issue: by running model lspClient and looking at the "Process invocation" tab, I noticed it's calling pyright-langserver '--stdio', but I didn't have pyright installed. I installed pyright (in a virtual env, which I activated before runnign GT), and now I don't get the AsyncFutureExecutionError!

However, now when I inspect the result, it claims that there are no classes: