Generator objects are what Python uses to implement generator iterators. They are normally created by iterating over a function that yields values, rather than explicitly calling PyGen_New() .
The C structure used for generator objects.
The type object corresponding to generator objects
返回 True 若 ob is a generator object; ob 不得为 NULL .
返回 True 若 ob ‘s type is PyGen_Type is a generator object; ob 不得为 NULL .