Merge branch 'master' of https://github.com/microsoft/ai4eutils

parallel_enumerate_blobs.py

@@ -57,6 +57,7 @@ def read_prefix_list(prefix_list_file):
     with open(prefix_list_file,'r') as f:
         prefixes = f.readlines()
     prefixes = [s.strip() for s in prefixes]
+    prefixes = [s for s in prefixes if len(s) > 0]
     print('Read {} prefixes from {}'.format(len(prefixes),
                                             prefix_list_file))
     return prefixes