From: Barry Warsaw <barry@python.org>
Date: Tue, 13 Nov 2001 18:00:40 +0000 (+0000)
Subject: parsedate_tz(): If data is false, return None.  Fixes bug #478115,
X-Git-Tag: v2.2.1c1~783
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4a106ee9e1551fc12c9a767b660c6cdf7b5d9823;p=python

parsedate_tz(): If data is false, return None.  Fixes bug #478115,
IndexError when a Date: field exists with an empty value.
---

diff --git a/Lib/rfc822.py b/Lib/rfc822.py
index 430e6372f0..0019949588 100644
--- a/Lib/rfc822.py
+++ b/Lib/rfc822.py
@@ -858,6 +858,8 @@ def parsedate_tz(data):
 
     Accounts for military timezones.
     """
+    if not data:
+        return None
     data = data.split()
     if data[0][-1] in (',', '.') or data[0].lower() in _daynames:
         # There's a dayname here. Skip it