# tensorplay.ao.quantization.default_dynamic_quant_observer Source: https://www.tensorplay.cn/docs/generated/tensorplay.ao.quantization.default_dynamic_quant_observer.html ```python tensorplay.ao.quantization.default_dynamic_quant_observer = PlaceholderObserver(dtype=tensorplay.float32) ``` observer classes be specialized with constructor arguments while staying callable as observer_cls(**kwargs).