An example of using fixtures in south migrations

(ab)using fixtures in migrations

from django.core import serializers

widgets = serializers.deserialize('json', open('widget/fixtures/widgets.json'))
for widget_data in widgets:
    widget = orm.Widget()
    for k,v in widget_data.object.__dict__.items():
        if k.startswith('_'):
            continue
        setattr(widget, k, v)
    widget.save()