Bugs item #1155362, was opened at 2005-03-02 23:03
Message generated for change (Comment added) made by tzot
You can respond by visiting: 
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Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: TH (therve)
Assigned to: Barry A. Warsaw (bwarsaw)
Summary: Bugs in parsedate_tz

Initial Comment:
The parsing in emails is incomplete in both rfc822.py
and _parseaddr.py.

For example, "Wed, 02 Mar 2005 09:26:53+0800" is parsed
but "Wed, 02 Mar 2005 09:26:53-0800" is not.

The problem is clear by watching the code : only "+"
timezones are corrected.
Following a patch :

Index : _parseaddr.py
----------------------------------------------------------------
@@ -60,7 +66,11 @@ def parsedate_tz(data):
         if i > 0:
             data[3:] = [s[:i], s[i+1:]]
         else:
-            data.append('') # Dummy tz
+           i = s.find('-')
+           if i > 0:
+               data[3:] = [s[:i], s[i:]]
+           else:
+               data.append('') # Dummy tz
     if len(data) < 5:
         return None
     data = data[:5]
----------------------------------------------------------------

----------------------------------------------------------------------

Comment By: Christos Georgiou (tzot)
Date: 2005-03-20 13:48

Message:
Logged In: YES 
user_id=539787

Note that parsedate_tz as of current parses correctly "Wed,
02 Mar 2005 09:26:53 -0800" (space before '-'), because
data.split() in line 43 produces five parts: [dow, date,
month, year, time, timezone] (reduced to four by removing
initial dow).   The function includes a special check for
"+" in the time part, and this patch adds the "-" check.

I didn't find any date header in my whole email and
newsgroup archive (12095 messages) missing the space before
[-+].  However, if mail clients or servers exist that
produce such date headers, patch should be applied and bug
closed.

Notes:
Some test should be added too.  I updated
test_parsedate_no_dayofweek (line 2076 of
lib/email/test/test_email.py) adding same test dropping the
space before '-', and test fails before patch, succeeds
after patch.  Perhaps a separate test case should be included.

----------------------------------------------------------------------

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