From: Eli Bendersky <eliben@gmail.com>
Date: Fri, 4 Mar 2011 05:34:58 +0000 (+0000)
Subject: Issue #11388: Added a clear() method to MutableSequence
X-Git-Tag: v3.3.0a1~2996
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9479d1ade84d7a386a107989b699fb90b73cfa15;p=thirdparty%2FPython%2Fcpython.git

Issue #11388: Added a clear() method to MutableSequence
---

diff --git a/Lib/collections/abc.py b/Lib/collections/abc.py
index 6e908bdce973..c80c7ddd4430 100644
--- a/Lib/collections/abc.py
+++ b/Lib/collections/abc.py
@@ -596,6 +596,13 @@ class MutableSequence(Sequence):
     def append(self, value):
         self.insert(len(self), value)
 
+    def clear(self):
+        try:
+            while True:
+                self.pop()
+        except IndexError:
+            pass
+
     def reverse(self):
         n = len(self)
         for i in range(n//2):
diff --git a/Misc/NEWS b/Misc/NEWS
index 876afdd08ef3..6b484f727c90 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -140,6 +140,8 @@ Library
 - Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
   larger than 4GB.  Patch by Nadeem Vawda.
 
+- Issue #11388: Added a clear() method to MutableSequence
+
 Build
 -----