AzureStorageDownloader.py: Try importing azure.storage and install if necessary

DataScience/AzureStorageDownloader.py

@@ -1,6 +1,14 @@
-from azure.storage.blob import BlockBlobService
 import pickle, os, time, sys, datetime, requests, argparse
 import configparser
+try:
+    from azure.storage.blob import BlockBlobService
+except ImportError as e:
+    print('ImportError: {}'.format(e))
+    if input("azure.storage.blob is required. Do you want to install it [Y/n]? ") != 'Y':
+        sys.exit()
+    import pip
+    pip.main(['install', 'azure.storage.blob'])
+
 
 LogDownloaderURL = "https://cps-staging-exp-experimentation.azurewebsites.net/api/Log?account={ACCOUNT_NAME}&key={ACCOUNT_KEY}&start={START_DATE}&end={END_DATE}&container={CONTAINER}"