Enable cell related commands when a Python file is already open (#11188)

Author: DonJayamanne

news/2 Fixes/10884.md

@@ -0,0 +1 @@
+Enable cell related commands when a Python file is already open.

src/client/datascience/context/activeEditorContext.ts

@@ -62,6 +62,11 @@ export class ActiveEditorContextService implements IExtensionSingleActivationSer
             this,
             this.disposables
         );
+
+        // Do we already have python file opened.
+        if (this.docManager.activeTextEditor?.document.languageId === PYTHON_LANGUAGE) {
+            this.onDidChangeActiveTextEditor(this.docManager.activeTextEditor);
+        }
     }
 
     private onDidChangeActiveInteractiveWindow(e?: IInteractiveWindow) {