Django 1.4.2 does not support Jython 2.5.3 (strptime issue)

[Steven L Smith]

As near as I can tell, this is a problem with Django / Jython compatibility and not my code... if I'm wrong feel free to slap my wrist...

A form was created with the following field:
start_date = forms.DateTimeField(required=True, widget=forms.DateTimeInput({'class': 'datetime'}))

The following POST data was passed:
start_date u'11/03/2012 00:00:00'

The following traceback was received when I check for form.is_valid() in the view:

Environment:

Request Method: POST
Request URL: http://127.0.0.1:6701/reports/ondemand/Top_Incident_Types/

Django Version: 1.4.2
Python Version: 2.5.3
Installed Applications:
('django.contrib.formtools',
 'django.contrib.humanize',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'mykui.accounts',
 'mykui.console',
 'mykui.mykonfig',
 'mykui.reports',
 'mykui.status',
 'mykui.updates',
 'mykui.util')
Installed Middleware:
('django.middleware.gzip.GZipMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'mykui.middleware.UserMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'mykui.middleware.UnavailableMiddleware',
 'mykui.middleware.SystemMessageMiddleware',
 'mykui.middleware.TimezoneMiddleware')


Traceback:
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/views/decorators/http.py" in inner
  41.             return func(request, *args, **kwargs)
File "/usr/share/msa/ui/mykui/decorators.py" in _inner
  49. 		return view(*args, **kwargs)
File "/usr/share/msa/ui/mykui/decorators.py" in _inner
  31. 		return view(*args, **kwargs)
File "/usr/share/msa/ui/mykui/reports/views.py" in reports_ondemand
  38. 				if form.is_valid():
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/forms.py" in is_valid
  124.         return self.is_bound and not bool(self.errors)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/forms.py" in _get_errors
  115.             self.full_clean()
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/forms.py" in full_clean
  270.         self._clean_fields()
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/forms.py" in _clean_fields
  287.                     value = field.clean(value)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/forms.py" in _clean_fields
  287.                     value = field.clean(value)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/fields.py" in clean
  153.         value = self.to_python(value)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/fields.py" in to_python
  437.         result = super(DateTimeField, self).to_python(value)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/fields.py" in to_python
  342.                     return self.strptime(value, format)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/fields.py" in to_python
  342.                     return self.strptime(value, format)
File "/usr/share/msa/jython/Lib/site-packages/Django-1.4.2-py2.5.egg/django/forms/fields.py" in strptime
  441.         return datetime.datetime.strptime(value, format)
File "/usr/share/msa/jython/Lib/datetime.py" in strptime
  1499.         return cls(*(_time.strptime(date_string, format))[0:6])

Exception Type: IllegalArgumentException at /reports/ondemand/Top_Incident_Types/
Exception Value: java.lang.IllegalArgumentException: Illegal pattern character 'f'

At 441, format = '%Y-%m-%d %H:%M:%S.%f'

The %f formatting character was introduced in Python 2.6, but it is not supported in Jython, even in the 2.7 alphas. ​http://bugs.jython.org/issue1964

I remember this code working fine in Django 1.4.1, but I cannot seem to find a commit that would have broken it during the timeframe between the 1.4.1 and 1.4.2 releases.

[Aymeric Augustin]

This behavior was introduced by the fix for #9459.