From: Bob Halley <halley@dnspython.org>
Date: Thu, 20 Jul 2006 21:59:20 +0000 (+0000)
Subject: implement more of the sequence protocol in Answer
X-Git-Tag: v1.5.0~25
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=695199c0ec2395fc761b6ccc6e74b87323041958;p=thirdparty%2Fdnspython.git

implement more of the sequence protocol in Answer
---

diff --git a/ChangeLog b/ChangeLog
index 3d011320..86ed2773 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2006-07-20  Bob Halley  <halley@dnspython.org>
+
+	* dns/resolver.py (Answer): Add more support for the sequence
+	  protocol, forwarding requests to the answer object's rrset.
+	  E.g. "for a in answer" is equivalent to "for a in answer.rrset",
+	  "answer[i]" is equivalent to "answer.rrset[i]", and
+	  "answer[i:j]" is equivalent to "answer.rrset[i:j]".
+
 2006-07-19  Bob Halley  <halley@dnspython.org>
 
 	* dns/query.py (xfr): Add IXFR support.
diff --git a/dns/resolver.py b/dns/resolver.py
index 0b4013f9..9e8339aa 100644
--- a/dns/resolver.py
+++ b/dns/resolver.py
@@ -68,8 +68,11 @@ class Answer(object):
     Instances of this class bundle up the result of a successful DNS
     resolution.
 
-    For convenience, the answer is iterable.  "for a in answer" is
-    equivalent to "for a in answer.rrset".
+    For convenience, the answer object implements much of the sequence
+    protocol, forwarding to its rrset.  E.g. "for a in answer" is
+    equivalent to "for a in answer.rrset", "answer[i]" is equivalent
+    to "answer.rrset[i]", and "answer[i:j]" is equivalent to
+    "answer.rrset[i:j]".
 
     Note that CNAMEs or DNAMEs in the response may mean that answer
     node's name might not be the query name.
@@ -142,6 +145,18 @@ class Answer(object):
     def __iter__(self):
         return iter(self.rrset)
 
+    def __getitem__(self, i):
+        return self.rrset[i]
+
+    def __delitem__(self, i):
+        del self.rrset[i]
+
+    def __getslice__(self, i, j):
+        return self.rrset[i:j]
+
+    def __delslice__(self, i, j):
+        del self.rrset[i:j]
+
 class Cache(object):
     """Simple DNS answer cache.