def _load_serializers():
    global _serializers
    serializers = {}
    for format in BUILTIN_SERIALIZERS:
        register_serializer(format, BUILTIN_SERIALIZERS[format], serializers)
    if hasattr(settings, "SERIALIZATION_MODULES"):
        for format in settings.SERIALIZATION_MODULES:
            register_serializer(format, settings.SERIALIZATION_MODULES[format], serializers)
    _serializers = serializers
Check the method clientConnectionFailed.
dataset/ETHPy150Open dcramer/django-compositepks/django/core/serializers/__init__.py/_load_serializers--crossover with--dataset/ETHPy150Open facebook/fbpush/tests/test_push.py/FBPushJunoscriptRpcTestCase.test_clientConnectionFailed