Install latest version of nbconvert to fix Jinja issue.

Dockerfile.tmpl

@@ -389,14 +389,14 @@ RUN pip install bleach && \
  pip install ipywidgets && \
  pip install isoweek && \
  pip install jedi && \
- pip install Jinja2 && \
  pip install jsonschema && \
  pip install jupyter-client && \
  pip install jupyter-console && \
  pip install jupyter-core && \
  pip install MarkupSafe && \
  pip install mistune && \
- pip install nbconvert && \
+ # b/227194111 install latest version of nbconvert until the base image includes nbconvert >= 6.4.5
+ pip install --upgrade nbconvert Jinja2 && \
  pip install nbformat && \
  pip install notebook && \
  pip install papermill && \

tests/test_jupyter_nbconvert.py

@@ -3,7 +3,7 @@
 import subprocess
 
 class TestJupyterNbconvert(unittest.TestCase):
- def test_nbconvert(self):
+ def test_nbconvert_to_notebook(self):
  result = subprocess.run([
  'jupyter',
  'nbconvert',
@@ -17,4 +17,20 @@ def test_nbconvert(self):
  ], stdout=subprocess.PIPE)
 
  self.assertEqual(0, result.returncode)
- self.assertTrue(b'999' in result.stdout)
+ self.assertTrue(b'999' in result.stdout)
+
+ def test_nbconvert_to_html(self):
+ result = subprocess.run([
+ 'jupyter',
+ 'nbconvert',
+ '--to',
+ 'html',
+ '--template',
+ '/opt/kaggle/nbconvert-extensions.tpl',
+ '--execute',
+ '--stdout',
+ '/input/tests/data/notebook.ipynb',
+ ], stdout=subprocess.PIPE)
+
+ self.assertEqual(0, result.returncode)
+ self.assertTrue(b'999' in result.stdout)