Python iteratable objects, iterators and generators, and python object generators

Python iteratable objects, iterators and generators, and python object generators

Iteration is the cornerstone of data processing. When scanning a data set that cannot be stored in the memory, we need to find a way to obtain data items in inertia, that is, obtain a data item at a time as needed. This is the Iterator pattern ).

 

Sentence class 1st: word sequence 

We need to implement an Sentence class to open the journey of exploring iteratable objects. We pass in strings containing some text to the constructor of this class, and then we can iterate words one by one. To implement the sequence protocol in version 1st, the objects of this class can be iterated, because all sequences can be iterated-as mentioned earlier, but now we need to explain the real reasons.