class PeekingIterator(Iterator):
- """An iterator that lets you :method:`peek` at the next item on deck.
+ """An iterator that lets you peek() at the next item on deck.
Returns None when there is no next item (i.e. when
- :method:`__next__` will produce a StopIteration exception).
+ __next__() will produce a StopIteration exception).
>>> p = PeekingIterator(iter(range(3)))
>>> p.__next__()
collects a random sample (of size sample_size) of the stream that can
be queried at any time.
- Note that until sample_size elements have been seen the sample will
- be less than sample_size elements in length.
+ .. note::
+ Until sample_size elements have been seen the sample will be
+ less than sample_size elements in length.
- Note that if sample_size is > len(source_iter) then it will produce
- a copy of source_iter.
+ .. note::
+ If sample_size is > len(source_iter) then it will produce a
+ copy of source_iter.
>>> import collections
>>> import random