From 11bf824c0a1b3793acc116ca22e188cbaa80a6fd Mon Sep 17 00:00:00 2001
From: KIU Shueng Chuan <nixchuan@gmail.com>
Date: Fri, 25 Jun 2021 03:53:38 +0800
Subject: [PATCH] deprecate ordereddict.OrderedDict on instantiation

---
 pyqtgraph/ordereddict.py | 143 +++------------------------------------
 1 file changed, 9 insertions(+), 134 deletions(-)

diff --git a/pyqtgraph/ordereddict.py b/pyqtgraph/ordereddict.py
index a562c8b8..b587437b 100644
--- a/pyqtgraph/ordereddict.py
+++ b/pyqtgraph/ordereddict.py
@@ -1,137 +1,12 @@
-# Copyright (c) 2009 Raymond Hettinger
-#
-# Permission is hereby granted, free of charge, to any person
-# obtaining a copy of this software and associated documentation files
-# (the "Software"), to deal in the Software without restriction,
-# including without limitation the rights to use, copy, modify, merge,
-# publish, distribute, sublicense, and/or sell copies of the Software,
-# and to permit persons to whom the Software is furnished to do so,
-# subject to the following conditions:
-#
-#     The above copyright notice and this permission notice shall be
-#     included in all copies or substantial portions of the Software.
-#
-#     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-#     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-#     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-#     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-#     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-#     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-#     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-#     OTHER DEALINGS IN THE SOFTWARE.
-
+import collections
 import warnings
-warnings.warn(
-    "OrderedDict is in the standard library for supported versions of Python. Will be removed in 0.13",
-    DeprecationWarning, stacklevel=2
-)
 
-import sys
-if sys.version[0] > '2':
-    from collections import OrderedDict
-else:
-    from UserDict import DictMixin
 
-    class OrderedDict(dict, DictMixin):
-
-        def __init__(self, *args, **kwds):
-            if len(args) > 1:
-                raise TypeError('expected at most 1 arguments, got %d' % len(args))
-            try:
-                self.__end
-            except AttributeError:
-                self.clear()
-            self.update(*args, **kwds)
-
-        def clear(self):
-            self.__end = end = []
-            end += [None, end, end]         # sentinel node for doubly linked list
-            self.__map = {}                 # key --> [key, prev, next]
-            dict.clear(self)
-
-        def __setitem__(self, key, value):
-            if key not in self:
-                end = self.__end
-                curr = end[1]
-                curr[2] = end[1] = self.__map[key] = [key, curr, end]
-            dict.__setitem__(self, key, value)
-
-        def __delitem__(self, key):
-            dict.__delitem__(self, key)
-            key, prev, next = self.__map.pop(key)
-            prev[2] = next
-            next[1] = prev
-
-        def __iter__(self):
-            end = self.__end
-            curr = end[2]
-            while curr is not end:
-                yield curr[0]
-                curr = curr[2]
-
-        def __reversed__(self):
-            end = self.__end
-            curr = end[1]
-            while curr is not end:
-                yield curr[0]
-                curr = curr[1]
-
-        def popitem(self, last=True):
-            if not self:
-                raise KeyError('dictionary is empty')
-            if last:
-                key = reversed(self).next()
-            else:
-                key = iter(self).next()
-            value = self.pop(key)
-            return key, value
-
-        def __reduce__(self):
-            items = [[k, self[k]] for k in self]
-            tmp = self.__map, self.__end
-            del self.__map, self.__end
-            inst_dict = vars(self).copy()
-            self.__map, self.__end = tmp
-            if inst_dict:
-                return (self.__class__, (items,), inst_dict)
-            return self.__class__, (items,)
-
-        def keys(self):
-            return list(self)
-
-        setdefault = DictMixin.setdefault
-        update = DictMixin.update
-        pop = DictMixin.pop
-        values = DictMixin.values
-        items = DictMixin.items
-        iterkeys = DictMixin.iterkeys
-        itervalues = DictMixin.itervalues
-        iteritems = DictMixin.iteritems
-
-        def __repr__(self):
-            if not self:
-                return '%s()' % (self.__class__.__name__,)
-            return '%s(%r)' % (self.__class__.__name__, self.items())
-
-        def copy(self):
-            return self.__class__(self)
-
-        @classmethod
-        def fromkeys(cls, iterable, value=None):
-            d = cls()
-            for key in iterable:
-                d[key] = value
-            return d
-
-        def __eq__(self, other):
-            if isinstance(other, OrderedDict):
-                if len(self) != len(other):
-                    return False
-                for p, q in  zip(self.items(), other.items()):
-                    if p != q:
-                        return False
-                return True
-            return dict.__eq__(self, other)
-
-        def __ne__(self, other):
-            return not self == other
+class OrderedDict(collections.OrderedDict):
+    def __init__(self, *args, **kwds):
+        warnings.warn(
+            "OrderedDict is in the standard library for supported versions of Python. Will be removed in 0.13",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        super().__init__(*args, **kwds)
\ No newline at end of file