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File/Folder	Size	Actions
__init__.py	1.03 KB	Del OK
__pycache__	-	Del OK
_compat.py	2.73 KB	Del OK
_functools.py	4.84 KB	Del OK
_lru_cache.py	5.26 KB	Del OK
_queue.py	11 KB	Del OK
_types.py	2.19 KB	Del OK
_werkzeug.py	3.7 KB	Del OK
api.py	6.05 KB	Del OK
attachments.py	1.77 KB	Del OK
client.py	22.35 KB	Del OK
consts.py	8.49 KB	Del OK
crons	-	Del OK
debug.py	1.11 KB	Del OK
envelope.py	9.37 KB	Del OK
hub.py	26.42 KB	Del OK
integrations	-	Del OK
monitor.py	2.97 KB	Del OK
profiler.py	33.18 KB	Del OK
py.typed	0 B	Del OK
scope.py	24.26 KB	Del OK
scrubber.py	3.8 KB	Del OK
serializer.py	12.97 KB	Del OK
session.py	5.43 KB	Del OK
sessions.py	5.76 KB	Del OK
tracing.py	29.04 KB	Del OK
tracing_utils.py	12 KB	Del OK
tracing_utils_py2.py	1.21 KB	Del OK
tracing_utils_py3.py	2.1 KB	Del OK
transport.py	18.13 KB	Del OK
utils.py	45.58 KB	Del OK
worker.py	4.15 KB	Del OK

Edit: _lru_cache.py

""" A fork of Python 3.6's stdlib lru_cache (found in Python's 'cpython/Lib/functools.py') adapted into a data structure for single threaded uses. https://github.com/python/cpython/blob/v3.6.12/Lib/functools.py Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Python Software Foundation; All Rights Reserved PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2 -------------------------------------------- 1. This LICENSE AGREEMENT is between the Python Software Foundation ("PSF"), and the Individual or Organization ("Licensee") accessing and otherwise using this software ("Python") in source or binary form and its associated documentation. 2. Subject to the terms and conditions of this License Agreement, PSF hereby grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce, analyze, test, perform and/or display publicly, prepare derivative works, distribute, and otherwise use Python alone or in any derivative version, provided, however, that PSF's License Agreement and PSF's notice of copyright, i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Python Software Foundation; All Rights Reserved" are retained in Python alone or in any derivative version prepared by Licensee. 3. In the event Licensee prepares a derivative work that is based on or incorporates Python or any part thereof, and wants to make the derivative work available to others as provided herein, then Licensee hereby agrees to include in any such work a brief summary of the changes made to Python. 4. PSF is making Python available to Licensee on an "AS IS" basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT INFRINGE ANY THIRD PARTY RIGHTS. 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. 6. This License Agreement will automatically terminate upon a material breach of its terms and conditions. 7. Nothing in this License Agreement shall be deemed to create any relationship of agency, partnership, or joint venture between PSF and Licensee. This License Agreement does not grant permission to use PSF trademarks or trade name in a trademark sense to endorse or promote products or services of Licensee, or any third party. 8. By copying, installing or otherwise using Python, Licensee agrees to be bound by the terms and conditions of this License Agreement. """ SENTINEL = object() # aliases to the entries in a node PREV = 0 NEXT = 1 KEY = 2 VALUE = 3 class LRUCache(object): def __init__(self, max_size): assert max_size > 0 self.max_size = max_size self.full = False self.cache = {} # root of the circularly linked list to keep track of # the least recently used key self.root = [] # type: ignore # the node looks like [PREV, NEXT, KEY, VALUE] self.root[:] = [self.root, self.root, None, None] self.hits = self.misses = 0 def set(self, key, value): link = self.cache.get(key, SENTINEL) if link is not SENTINEL: # have to move the node to the front of the linked list link_prev, link_next, _key, _value = link # first remove the node from the lsnked list link_prev[NEXT] = link_next link_next[PREV] = link_prev # insert the node between the root and the last last = self.root[PREV] last[NEXT] = self.root[PREV] = link link[PREV] = last link[NEXT] = self.root # update the value link[VALUE] = value elif self.full: # reuse the root node, so update its key/value old_root = self.root old_root[KEY] = key old_root[VALUE] = value self.root = old_root[NEXT] old_key = self.root[KEY] self.root[KEY] = self.root[VALUE] = None del self.cache[old_key] self.cache[key] = old_root else: # insert new node after last last = self.root[PREV] link = [last, self.root, key, value] last[NEXT] = self.root[PREV] = self.cache[key] = link self.full = len(self.cache) >= self.max_size def get(self, key, default=None): link = self.cache.get(key, SENTINEL) if link is SENTINEL: self.misses += 1 return default # have to move the node to the front of the linked list link_prev, link_next, _key, _value = link # first remove the node from the lsnked list link_prev[NEXT] = link_next link_next[PREV] = link_prev # insert the node between the root and the last last = self.root[PREV] last[NEXT] = self.root[PREV] = link link[PREV] = last link[NEXT] = self.root self.hits += 1 return link[VALUE]
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