def append(self, name, value):
        return self._sequence[name].append(value)
DateFields can parse dates in the default format
dataset/ETHPy150Open armet/python-armet/armet/http/response.py/Headers.append--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/tests/regressiontests/forms/tests/input_formats.py/LocalizedDateTests.test_dateField