8.Vertical type beer cooler body is made of stainless steel which beautiful outlook .It can be connected with mini brew system in the pubs or restaurant and can raise the grades of restaurants. 9.Easy to install ,operate wash and maintain ; ...
...``default(obj)``isa function that shouldreturna serializable version of obj or raise TypeError. Thedefaultsimplyraises TypeError..."""逻辑代码 其中skipkeys:是说对于字典的key,如果skipkeys设置是默认false,那么key只能是基础数据类型 (``str``, ``unicode``, ``int``, ``long``, ``float``,...