Fix export to python script not appearing (#5407)

* assume a notebook is a python notebook if the
kernelspec name includes python

* news

* use intepreter to decide if its a python notebook

* keep both conditions

.eslintrc.js

@@ -885,7 +885,6 @@ module.exports = {
         'src/client/datascience/editor-integration/codelensprovider.ts',
         'src/client/datascience/editor-integration/cellhashprovider.ts',
         'src/client/datascience/commands/commandLineSelector.ts',
-        'src/client/datascience/commands/exportCommands.ts',
         'src/client/datascience/cellFactory.ts',
         'src/client/datascience/notebook/notebookEditorCompatibilitySupport.ts',
         'src/client/datascience/notebook/constants.ts',

news/2 Fixes/5403.md

@@ -0,0 +1 @@
+Fix for 'Export as Python Script' option not appearing.

src/client/datascience/commands/exportCommands.ts

@@ -127,15 +127,20 @@ export class ExportCommands implements IDisposable {
         const items: IExportQuickPickItem[] = [];
         const notebook = JSON.parse(contents) as nbformat.INotebookContent;
 
-        if (notebook.metadata && isPythonNotebook(notebook.metadata)) {
+        if (interpreter || (notebook.metadata && isPythonNotebook(notebook.metadata))) {
             items.push({
                 label: DataScience.exportPythonQuickPickLabel(),
                 picked: true,
                 handler: () => {
                     sendTelemetryEvent(Telemetry.ClickedExportNotebookAsQuickPick, undefined, {
                         format: ExportFormat.python
                     });
-                    this.commandManager.executeCommand(Commands.ExportAsPythonScript, contents, source, interpreter);
+                    void this.commandManager.executeCommand(
+                        Commands.ExportAsPythonScript,
+                        contents,
+                        source,
+                        interpreter
+                    );
                 }
             });
         }
@@ -149,7 +154,7 @@ export class ExportCommands implements IDisposable {
                         sendTelemetryEvent(Telemetry.ClickedExportNotebookAsQuickPick, undefined, {
                             format: ExportFormat.html
                         });
-                        this.commandManager.executeCommand(
+                        void this.commandManager.executeCommand(
                             Commands.ExportToHTML,
                             contents,
                             source,
@@ -165,7 +170,7 @@ export class ExportCommands implements IDisposable {
                         sendTelemetryEvent(Telemetry.ClickedExportNotebookAsQuickPick, undefined, {
                             format: ExportFormat.pdf
                         });
-                        this.commandManager.executeCommand(
+                        void this.commandManager.executeCommand(
                             Commands.ExportToPDF,
                             contents,
                             source,

src/client/datascience/notebook/helpers/helpers.ts

@@ -109,6 +109,11 @@ export function isPythonNotebook(metadata?: nbformat.INotebookMetadata) {
     if (metadata?.language_info?.name && metadata.language_info.name !== PYTHON_LANGUAGE) {
         return false;
     }
+
+    if (kernelSpec?.name.includes(PYTHON_LANGUAGE)) {
+        return true;
+    }
+
     // Valid notebooks will have a language information in the metadata.
     return kernelSpec?.language === PYTHON_LANGUAGE;
 }