BUG: Removing a nonexistent store raises a KeyError

Author: danielballan

RELEASE.rst

@@ -40,7 +40,8 @@ pandas 0.12.0
 
 **API Changes**
 
-  -
+  - When removing an object from a store, **store.remove(key)**, raises
+    **KeyError** if **key** is not a valid store object.
 
 **Bug Fixes**
 

pandas/io/pytables.py

@@ -554,6 +554,10 @@ def remove(self, key, where=None, start=None, stop=None):
         -------
         number of rows removed (or None if not a Table)
 
+        Exceptions
+        ----------
+        raises KeyError if key is not a valid store
+
         """
         try:
             s = self.get_storer(key)
@@ -569,7 +573,7 @@ def remove(self, key, where=None, start=None, stop=None):
                 return None
 
         if s is None:
-            return None
+            raise KeyError('No object named %s in the file' % key)
 
         # remove the node
         if where is None: