Iterating through vars of peering connection fails on _status

[rswail]

boto 2.36.0

Accessing a peering connection VpcPeeringConnection using vars fails on the _status field.

>>> from boto import vpc
>>> c = vpc.connect_to_region('us-west-1')
>>> p = c.get_all_vpc_peering_connections()
>>> for k in vars(p[0]):
...     print k,getattr(p[0],k)
...
accepter_vpc_info VpcInfo:vpc-xxxxxx
tags {}
region RegionInfo:us-west-1
_status Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/usr/local/lib/python2.7/dist-packages/boto/vpc/vpc_peering_connection.py", line 79, in __repr__
    return '%s(%d)' % (self.code, self.message)
TypeError: %d format: a number is required, not unicode