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//usr/lib/python2.7/site-packages/pip/_vendor/urllib3/util/queue.py
import collections from ..packages import six from ..packages.six.moves import queue if six.PY2: # Queue is imported for side effects on MS Windows. See issue #229. import Queue as _unused_module_Queue # noqa: F401 class LifoQueue(queue.Queue): def _init(self, _): self.queue = collections.deque() def _qsize(self, len=len): return len(self.queue) def _put(self, item): self.queue.append(item) def _get(self): return self.queue.pop()
