From 3972628de3d569c88451a2a176a1c94d8822b8a6 Mon Sep 17 00:00:00 2001
From: Jon Dufresne <jon.dufresne@gmail.com>
Date: Thu, 18 May 2017 07:35:54 -0700
Subject: bpo-30296 Remove unnecessary tuples, lists, sets, and dicts (#1489)

* Replaced list(<generator expression>) with list comprehension
* Replaced dict(<generator expression>) with dict comprehension
* Replaced set(<list literal>) with set literal
* Replaced builtin func(<list comprehension>) with func(<generator
  expression>) when supported (e.g. any(), all(), tuple(), min(), &
  max())
---
 Lib/_weakrefset.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'Lib/_weakrefset.py')

diff --git a/Lib/_weakrefset.py b/Lib/_weakrefset.py
index 4d0de8ce75..304c66f59b 100644
--- a/Lib/_weakrefset.py
+++ b/Lib/_weakrefset.py
@@ -157,19 +157,19 @@ class WeakSet:
     __le__ = issubset
 
     def __lt__(self, other):
-        return self.data < set(ref(item) for item in other)
+        return self.data < set(map(ref, other))
 
     def issuperset(self, other):
         return self.data.issuperset(ref(item) for item in other)
     __ge__ = issuperset
 
     def __gt__(self, other):
-        return self.data > set(ref(item) for item in other)
+        return self.data > set(map(ref, other))
 
     def __eq__(self, other):
         if not isinstance(other, self.__class__):
             return NotImplemented
-        return self.data == set(ref(item) for item in other)
+        return self.data == set(map(ref, other))
 
     def symmetric_difference(self, other):
         newset = self.copy()
-- 
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