import importlib

packages = ['pandas', 'IPython', 'statsmodels', 'sklearn', 'seaborn',

'toolz', 'bs4', 'requests', 'scipy', 'tables']

bad = []

for package in packages:

try:

importlib.import_module(package)

except ImportError:

bad.append("Can't import %s" % package)

else:

if len(bad) > 0:

print('\n'.join(bad))

else:

from sklearn.datasets import california_housing

print("Caching california_housing")

data = california_housing.fetch_california_housing()

print("All good. Enjoy the tutorial!")