Allow ints to be passed in as item IDs (#530)

Author: sujaygarlanka

HISTORY.rst

@@ -3,6 +3,10 @@
 Release History
 ---------------
 
+Next Release
+++++++++
+- Allow ints to be passed in as item IDs
+
 2.9.0 (2020-06-23)
 ++++++++
 - Fix exception handling for OAuth

boxsdk/object/item.py

@@ -752,12 +752,12 @@ def validate_item_id(item_id):
 
         :param item_id:
         :type item_id:
-            `str`
+            `str` or `int`
         :raises:
             BoxException: if item_id is not numeric
         :returns:
         :rtype:
             None
         """
-        if not item_id.isdigit():
+        if not isinstance(item_id, int) and not item_id.isdigit():
             raise BoxValueError("Invalid item ID")