First, what is iterables,
Simple to understand that objects can be used for cycles, that is iterable. For example: list, string, dict, tuple generators.
Having characteristics iterations.
Second, what is the iterator
First iteration is to understand what it means?
Iteration: for each time the process is repeated once called "iteration", and the initial value of each iteration will be obtained as a result of the next iteration.
That iterator is: a machine each iteration of the initial value of the results obtained will be used as the next iteration.
Iterables not iterator, using built-in function in python iter () can be an iterative iterator object becomes.
Iterator = iter () + iterables
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