boto/boto — pull request #1004 by TaoLinVT (2012-09-20 00:19:44+00:00)
Title: Update boto/emr/connection.py

InstanceGroup defined at line 109 in following file
https://github.com/boto/boto/blob/develop/boto/emr/emrobject.py does not have num_instances, role, and type. Instead it has instancerequestcount, instancerole, and instancetype.

The original code caused exception like "ttributeError: 'InstanceGroup' object has no attribute " and new code proposed fixes the problem.