text: import unittest
  
  
  class TestImports(unittest.TestCase):
      """
      Basic smoke test to ensure that the installed packages can actually be
      imported (we had a compatibility issue once that was not resolved
      properly by conda).
      """
      def test_infrastructure_packages(self):
          import gdown
          import sphinx
          import click
          import joblib
          import requests
  
      def test_common_packages(self):
          import numpy
          import scipy.sparse
          import pandas
          import bokeh
          import matplotlib
          import sklearn
  