Fix PendingDeprecationWarning in libbmc.tools.batch

libbmc/__init__.py

@@ -8,4 +8,4 @@ with scientific papers.
 # Global list of valid paper identifier types. See README.md.
 __valid_identifiers__ = []
 
-__version__ = "0.2"
+__version__ = "0.2.1"

libbmc/tools.py

@@ -108,7 +108,10 @@ def batch(iterable, size):
     item = iter(iterable)
     while True:
         batch_iterator = islice(item, size)
-        yield chain([next(batch_iterator)], batch_iterator)
+        try:
+            yield chain([next(batch_iterator)], batch_iterator)
+        except StopIteration:
+            return
 
 
 def remove_urls(text):