[Zope] Datetime bug in Zope-2.7.6?

Dennis Allison allison at shasta.stanford.edu
Sat Jun 11 19:54:03 EDT 2005


Zope 2.7.6
Python 2.4.1 (and yes, I know I am jumping the gun a bit)

The problem appears to be in the parse component -- 

Consider a test script:

for y in range(1995,2005):
    for d in (1, 3, 13, 25,):
        for m in (1,4,5,6,):
             dd = '%d-%02d-%02d' % (y,m,d,)
             ee  = '%d/%d/%d' % (m, d, y)
             D  = DateTime(dd)
             E  = DateTime(ee)
             print dd, D.strftime('%Y-%m-%d')
             print ee, E.strftime('%Y-%m-%d')
return printed

In all cases, each of the dates shoudl be the same.  As can be seen,
for dates sourced from a string of the form

1995-04-25

the resulatant date is off by one day

1995-04-24

The problem is not seen with Zope 2.6.4 running with 
Python 2.3.5.

A quick diff shows tht there are many changes between 2.6 and 2.7.
Anyone else seen this problem?

------------------------------------
Partial Results:

1995-04-25 1995-04-24
4/25/1995 1995-04-25

1995-05-25 1995-05-24
5/25/1995 1995-05-25

1995-06-25 1995-06-24
6/25/1995 1995-06-25

-- 
Dennis Allison * Computer Systems Laboratory * Gates 227
               * Stanford University *  Stanford CA  94305
	       * (650) 723-9213 * (650) 723-0033 fax
	       * allison at shasta.stanford.edu
	       * allison at sumeru.stanford.edu




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