From: Raymond Hettinger <python@rcn.com>
Date: Wed, 30 Jan 2008 00:08:31 +0000 (+0000)
Subject: MutableSets support a remove() method.
X-Git-Tag: v2.6a1~342
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7d518f418b8bb7f155c8e695adbc5b69ac0ed0fd;p=python

MutableSets support a remove() method.
---

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 3a84b965b4..e1e65106ce 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -250,6 +250,12 @@ class MutableSet(Set):
         """Return True if it was deleted, False if not there."""
         raise NotImplementedError
 
+    def remove(self, value):
+        """Remove an element. If not a member, raise a KeyError."""
+        if value not in self:
+            raise KeyError(value)
+        self.discard(value)
+
     def pop(self):
         """Return the popped value.  Raise KeyError if empty."""
         it = iter(self)