Delete swarm_client.

swarm_client/third_party/requests/packages/urllib3/_collections.py

-# urllib3/_collections.py
-# Copyright 2008-2013 Andrey Petrov and contributors (see CONTRIBUTORS.txt)
-#
-# This module is part of urllib3 and is released under
-# the MIT License: http://www.opensource.org/licenses/mit-license.php
-
-from collections import MutableMapping
-from threading import RLock
-
-try: # Python 2.7+
-    from collections import OrderedDict
-except ImportError:
-    from .packages.ordered_dict import OrderedDict
-
-
-__all__ = ['RecentlyUsedContainer']
-
-
-_Null = object()
-
-
-class RecentlyUsedContainer(MutableMapping):
-    """
-    Provides a thread-safe dict-like container which maintains up to
-    ``maxsize`` keys while throwing away the least-recently-used keys beyond
-    ``maxsize``.
-
-    :param maxsize:
-        Maximum number of recent elements to retain.
-
-    :param dispose_func:
-        Every time an item is evicted from the container,
-        ``dispose_func(value)`` is called.  Callback which will get called
-    """
-
-    ContainerCls = OrderedDict
-
-    def __init__(self, maxsize=10, dispose_func=None):
-        self._maxsize = maxsize
-        self.dispose_func = dispose_func
-
-        self._container = self.ContainerCls()
-        self.lock = RLock()
-
-    def __getitem__(self, key):
-        # Re-insert the item, moving it to the end of the eviction line.
-        with self.lock:
-            item = self._container.pop(key)
-            self._container[key] = item
-            return item
-
-    def __setitem__(self, key, value):
-        evicted_value = _Null
-        with self.lock:
-            # Possibly evict the existing value of 'key'
-            evicted_value = self._container.get(key, _Null)
-            self._container[key] = value
-
-            # If we didn't evict an existing value, we might have to evict the
-            # least recently used item from the beginning of the container.
-            if len(self._container) > self._maxsize:
-                _key, evicted_value = self._container.popitem(last=False)
-
-        if self.dispose_func and evicted_value is not _Null:
-            self.dispose_func(evicted_value)
-
-    def __delitem__(self, key):
-        with self.lock:
-            value = self._container.pop(key)
-
-        if self.dispose_func:
-            self.dispose_func(value)
-
-    def __len__(self):
-        with self.lock:
-            return len(self._container)
-
-    def __iter__(self):
-        raise NotImplementedError('Iteration over this class is unlikely to be threadsafe.')
-
-    def clear(self):
-        with self.lock:
-            # Copy pointers to all values, then wipe the mapping
-            # under Python 2, this copies the list of values twice :-|
-            values = list(self._container.values())
-            self._container.clear()
-
-        if self.dispose_func:
-            for value in values:
-                self.dispose_func(value)
-
-    def keys(self):
-        with self.lock:
-            return self._container.keys()