__init__.py 文件源码

def _load_serializers():
    """
    Register built-in and settings-defined serializers. This is done lazily so
    that user code has a chance to (e.g.) set up custom settings without
    needing to be careful of import order.
    """
    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