first commit

.venv/Lib/site-packages/notebook/services/nbconvert/handlers.py

@@ -0,0 +1,39 @@
+import json
+
+from tornado import web
+
+from ...base.handlers import APIHandler
+
+
+class NbconvertRootHandler(APIHandler):
+
+    @web.authenticated
+    def get(self):
+        self.check_xsrf_cookie()
+        try:
+            from nbconvert.exporters import base
+        except ImportError as e:
+            raise web.HTTPError(500, f"Could not import nbconvert: {e}") from e
+        res = {}
+        exporters = base.get_export_names()
+        for exporter_name in exporters:
+            try:
+                exporter_class = base.get_exporter(exporter_name)
+            except ValueError:
+                # I think the only way this will happen is if the entrypoint
+                # is uninstalled while this method is running
+                continue
+            # XXX: According to the docs, it looks like this should be set to None
+            # if the exporter shouldn't be exposed to the front-end and a friendly
+            # name if it should. However, none of the built-in exports have it defined.
+            # if not exporter_class.export_from_notebook:
+            #    continue
+            res[exporter_name] = {
+                "output_mimetype": exporter_class.output_mimetype,
+            }
+
+        self.finish(json.dumps(res))
+
+default_handlers = [
+    (r"/api/nbconvert", NbconvertRootHandler),
+]

.venv/Lib/site-packages/notebook/services/nbconvert/tests/test_nbconvert_api.py

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+from notebook.utils import url_path_join
+from notebook.tests.launchnotebook import NotebookTestBase
+
+class NbconvertAPI:
+    """Wrapper for nbconvert API calls."""
+    def __init__(self, request):
+        self.request = request
+
+    def _req(self, verb, path, body=None, params=None):
+        response = self.request(verb,
+                url_path_join('api/nbconvert', path),
+                data=body, params=params,
+        )
+        response.raise_for_status()
+        return response
+
+    def list_formats(self):
+        return self._req('GET', '')
+
+class APITest(NotebookTestBase):
+    def setUp(self):
+        self.nbconvert_api = NbconvertAPI(self.request)
+
+    def test_list_formats(self):
+        formats = self.nbconvert_api.list_formats().json()
+        self.assertIsInstance(formats, dict)
+        self.assertIn('python', formats)
+        self.assertIn('html', formats)
+        self.assertEqual(formats['python']['output_mimetype'], 'text/x-python')