Code change:
<!-- Please search existing issues to avoid creating duplicates. --- VS Code version: 1.59.1 Extension version (available under the Extensions sidebar): v2021.8. OS and version: Linux x64 5.13.11-1-MANJARO Python version (& distribution if applicable, e.g. Anaconda): 3.9 Type of virtual environment used (N/A ...): virtualenvwrapper Relevant/affected Python-related VS Code extensions and their versions: pylance v2021.8.3, jupyter v2021.8., Visual Studio IntelliCode v1.2.14 Value of the setting: Pylance from the VS Code marketplace to see if that fixes your issue] Extension loads successfuly Extension does not load, console reports "Unexpected token ' in JSON at position " [NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue] the extension by clicking a .py file <!-- Note: If you think a GIF of what is happening would be helpful, consider tools like , or . --<details<summaryOutput for <codePython</codein the <codeOutput</codepanel (<codeView</code→<codeOutput</code, change the drop-down the upper-right of the <codeOutput</codepanel to <codePython</code) </summary<p</p</details
Looks like you might have a bad update. Do the following to remove stale versions of the extension: Python extension (if you have pylance uninstall it first). all instances of VS Code. to, (on windows) or on Linux/Mac. any folder with the name starting with VS Code, and install Python extension (also pylance if you uninstalled it in step 1).
I followed all steps, but nothing changed. should I try to install older version of python ext?
Hi Can you try installing an older version of the Python extension, and if it doesn't work can you try a different version of VS Code (either an old one or the Insiders build)?
I've installed python extension , jupyter and no pylance. here's the log: As you said I'm going to install older version of vscode
Hi Did you try installing an older version of VS Code?
FYI - This looks like some JSON stored via the became corrupt. The JSON is written a few lines lower, so it is unexpected that the value is corrupted. This might indicate some kind of bug in the storage layer. I don't remember writing that code, did you perhaps write that? Do you think it is so important such to fail extension activation when the JSON is corrupt, or should we catch that exception and return ?
I would suggest to be more resilient in extension activation as you suggest and fallback to an empty object here if any error rises from but log it as error: This is the first time I hear about a problem with persisting data into SQLite. However, seeing makes me think that this is not an officially supported Linux distribution.
curious if you could share the following 2 files with me (via e-mail is fine: find it on ). Steps: open the VSCode window where this issue happens View Command Palette =Log Storage Database Contents Help Toggle Dev Tools Find the 2 paths for the DBs send both files to me
I can still see the original issue in vscode-insiders v1.61.0-insider
whats the exact version you are on? And is it the issue that the extension fails to activate?
Version: 1.61.0-insider (user setup) Commit: Date: 2021-09-16T08:31:28.161Z Electron: 13.4.0 Chrome: 91.0.4472.164 14.16.0 V8: 9.1.269.39-electron.0 OS: WindowsNT x64 10.0. python extension: v2021.9. Error 2021-09-16 17:51:12: Error discovering pytest tests: [SyntaxError: Unexpected token S in JSON at position at (<anonymous) at a.runTestDiscovery (PATH.vscode-insidersextensionsms-outclient) at runMicrotasks (<anonymous) at processTicksAndRejections () at async (index 0) at async _.refreshTestData (PATH.vscode-insidersextensionsms-outclient) at async v.refreshTestDataInternal (PATH.vscode-insidersextensionsms-outclient)] { stdout: '[{"rootid": ".", "root": "...
I fixed the issue as reported in that extensions fail to activate when the contents in storage fail to get parsed. What you report here seems different to me. Looks like the python extension is calling on something that is not valid JSON? Have you asked the Python extension what this could be?
I see, I'll create a new issue. thanks

Related discussion:
text: this._storageListener.dispose(); } <del> $getValue<T>(shared: boolean, key: string): Promise<T | undefined> { </del> <ins> async $getValue<T>(shared: boolean, key: string): Promise<T | undefined> { </ins> if (shared) { this._sharedStorageKeysToWatch.set(key, true); } <del> try { return Promise.resolve(this._getValue<T>(shared, key)); } catch (error) { return Promise.reject(error); } </del> <ins> return this._getValue<T>(shared, key); </ins> } private _getValue<T>(shared: boolean, key: string): T | undefined { const jsonValue = this._storageService.get(key, shared ? StorageScope.GLOBAL : StorageScope.WORKSPACE); <del> if (!jsonValue) { return undefined; </del> <ins> if (jsonValue) { try { return JSON.parse(jsonValue); } catch (error) { // Do not fail this call but log it for diagnostics // https://github.com/microsoft/vscode/issues/132777 this._logService.error(`[mainThreadStorage] unexpected error parsing storage contents (key: ${key}, shared: ${shared}): ${error}`); } </ins> } <del> return JSON.parse(jsonValue); </del> <ins> return undefined; </ins> } <del> $setValue(shared: boolean, key: string, value: object): Promise<void> { let jsonValue: string; try { jsonValue = JSON.stringify(value); // Extension state is synced separately through extensions this._storageService.store(key, jsonValue, shared ? StorageScope.GLOBAL : StorageScope.WORKSPACE, StorageTarget.MACHINE); } catch (err) { return Promise.reject(err); } return Promise.resolve(undefined); </del> <ins> async $setValue(shared: boolean, key: string, value: object): Promise<void> { this._storageService.store(key, JSON.stringify(value), shared ? StorageScope.GLOBAL : StorageScope.WORKSPACE, StorageTarget.MACHINE /* Extension state is synced separately through extensions */); </ins> } $registerExtensionStorageKeysToSync(extension: IExtensionIdWithVersion, keys: string[]): void {