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add peekable docstrings

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This commit is contained in:
Nick Sweeting 2018-06-10 18:45:49 -04:00
parent f78838ef40
commit 91e7e0cd36
1 changed files with 4 additions and 0 deletions
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4
peekable.py
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@ -3,6 +3,10 @@ from collections import deque
_marker = object()
class Peekable(object):
"""Peekable version of a normal python generator.
Useful when you don't want to evaluate the entire iterable to look at
a specific item at a given idx.
"""
def __init__(self, iterable):
self._it = iter(iterable)
self._cache = deque()