Add lazy loading to factory.Iterator.

factory.Iterator no longers begins iteration of its argument
on declaration, since this behavior may trigger database query
when that argument is, for instance, a Django queryset.

The ``factory.Iterator``'s argument will only be called when
the containing ``Factory`` is first evaluated; this means that
factories using ``factory.Iterator(models.MyThingy.objects.all())``
will no longer call the database at import time.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/test_django.py b/tests/test_django.py
index 2cfb55c..bde8efe 100644
--- a/tests/test_django.py
+++ b/tests/test_django.py
@@ -21,6 +21,7 @@
 """Tests for factory_boy/Django interactions."""
 
 import os
+from .compat import is_python2, unittest, mock
 
 
 try:
@@ -64,7 +65,6 @@ except ImportError:  # pragma: no cover
 import factory
 import factory.django
 
-from .compat import is_python2, unittest, mock
 from . import testdata
 from . import tools