Merge pull request #325 from KevinSe/patch-1

Update block_blob_usage.py in samples

Author: zezha-msft

samples/blob/block_blob_usage.py

@@ -157,6 +157,7 @@ def copy_blob(self):
         copy = self.service.copy_blob(container_name, 'blob1copy', source)
 
         # Poll for copy completion
+        count = 0
         while copy.status != 'success':
             count = count + 1
             if count > 5:
@@ -443,4 +444,4 @@ def blocks(self):
         new_block_list.append(block_list.uncommitted_blocks[0])
         self.service.put_block_list(container_name, blob_name, new_block_list)
 
-        self.service.delete_container(container_name)
+        self.service.delete_container(container_name)