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import sys
info = sys.version_info
if info[:3] >= (3, 2, 0):
# for Python 3.2 ordinary unittest is fine
import unittest as unittest2
else:
import unittest2
try:
callable = callable
except NameError:
def callable(obj):
return hasattr(obj, '__call__')
inPy3k = sys.version_info[0] == 3
with_available = sys.version_info[:2] >= (2, 5)
def is_instance(obj, klass):
"""Version of is_instance that doesn't access __class__"""
return issubclass(type(obj), klass)
class SomeClass(object):
class_attribute = None
def wibble(self):
pass
class X(object):
pass
try:
next = next
except NameError:
def next(obj):
return obj.next()
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