【Looping Techniques】

1、When looping through dictionaries, the key and corresponding value can be retrieved at the same time using the items() method.

　　

2、enumerate(iterable, start=0)

　　Return an enumerate object. iterable must be a sequence, an iterator, or some other object which supports iteration. The __next__() method of the iterator returned by enumerate() returns a tuple containing a count (from start which defaults to 0) and the values obtained from iterating over iterable.

　　

　　Equivalent to:

　　

3、zip

　　

4、sorted

　　

5、reversed