Any Number of Items Iterator : method « Class « Python Tutorial

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2. Class
3. method

#!/usr/bin/env python

class AnyIter(object):
    def __init__(self, data, safe=False):
        self.safe = safe
        self.iter = iter(data)

    def __iter__(self):
        return self

    def next(self, howmany=1):
        retval = []
        for eachItem  in range(howmany):
            try:
               retval.append(self.iter.next())
            except StopIteration:
               if self.safe:
                    break
               else:
                    raise
        return retval

a = AnyIter(range(10))
i = iter(a)
for j  in range(1,5):
    print j, ':', i.next(j)

i = iter(a)