Source Code for Module pypat.behavioral.iterator

 1  from abc import ABCMeta, abstractmethod 
 2   
 3   
 4 -class Iterator(object): 
 5      """ 
 6      An Iterator class for the Iterator design pattern. 
 7   
 8      - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Behavioral-Pattern-Usage} 
 9      - External Iterator Pattern documentation: U{https://en.wikipedia.org/wiki/Iterator_pattern} 
10      """ 
11 -    def __init__(self, iterable): 
12          """ 
13          Initialize a new Iterator instance. 
14   
15          @param iterable: An Iterable object to iterate over. 
16          @type iterable: Iterable 
17          """ 
18          self.iterable = iterable 
19   
20 -    def __iter__(self): 
21          return self 
22   
23 -    def __next__(self): 
24          return self.iterable.__next__() 
25   
26   
27 -class Iterable(object, metaclass=ABCMeta): 
28      """ 
29      An abstract class representing an Iterable object as part of the Iterator design pattern. 
30   
31      - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Behavioral-Pattern-Usage} 
32      - External Iterator Pattern documentation: U{https://en.wikipedia.org/wiki/Iterator_pattern} 
33      """ 
34      @abstractmethod 
35 -    def __next__(self): 
36          """ 
37          All Iterable's must implement a __next__ method which eventually raises StopIteration. 
38          """ 
39          pass 
40