diff --git a/django/newforms/__init__.py b/django/newforms/__init__.py
index 1e92027b16dbc..f0eca9a950faa 100644
--- a/django/newforms/__init__.py
+++ b/django/newforms/__init__.py
@@ -10,847 +10,11 @@
     FatalValidationError -- short-circuits all other validators on a form
     ValidationWarning
     "This form field requires foo.js" and form.js_includes()
-
-# Form ########################################################################
-
->>> class Person(Form):
-...     first_name = CharField()
-...     last_name = CharField()
-...     birthday = DateField()
->>> p = Person({'first_name': u'John', 'last_name': u'Lennon', 'birthday': u'1940-10-9'})
->>> p.errors()
-{}
->>> p.is_valid()
-True
->>> p.errors().as_ul()
-u''
->>> p.errors().as_text()
-u''
->>> p.to_python()
-{'first_name': u'John', 'last_name': u'Lennon', 'birthday': datetime.date(1940, 10, 9)}
->>> print p['first_name']
-<input type="text" name="first_name" value="John" />
->>> print p['last_name']
-<input type="text" name="last_name" value="Lennon" />
->>> print p['birthday']
-<input type="text" name="birthday" value="1940-10-09" />
->>> for boundfield in p:
-...     print boundfield
-<input type="text" name="first_name" value="John" />
-<input type="text" name="last_name" value="Lennon" />
-<input type="text" name="birthday" value="1940-10-09" />
-
->>> p = Person({'last_name': u'Lennon'})
->>> p.errors()
-{'first_name': [u'This field is required.'], 'birthday': [u'This field is required.']}
->>> p.is_valid()
-False
->>> p.errors().as_ul()
-u'<ul class="errorlist"><li>first_name<ul class="errorlist"><li>This field is required.</li></ul></li><li>birthday<ul class="errorlist"><li>This field is required.</li></ul></li></ul>'
->>> print p.errors().as_text()
-* first_name
-  * This field is required.
-* birthday
-  * This field is required.
->>> p.to_python()
->>> repr(p.to_python())
-'None'
->>> p['first_name'].errors
-[u'This field is required.']
->>> p['first_name'].errors.as_ul()
-u'<ul class="errorlist"><li>This field is required.</li></ul>'
->>> p['first_name'].errors.as_text()
-u'* This field is required.'
-
->>> p = Person()
->>> print p['first_name']
-<input type="text" name="first_name" />
->>> print p['last_name']
-<input type="text" name="last_name" />
->>> print p['birthday']
-<input type="text" name="birthday" />
-
->>> class SignupForm(Form):
-...     email = EmailField()
-...     get_spam = BooleanField()
->>> f = SignupForm()
->>> print f['email']
-<input type="text" name="email" />
->>> print f['get_spam']
-<input type="checkbox" name="get_spam" />
-
->>> f = SignupForm({'email': 'test@example.com', 'get_spam': True})
->>> print f['email']
-<input type="text" name="email" value="test@example.com" />
->>> print f['get_spam']
-<input checked="checked" type="checkbox" name="get_spam" />
-
-Any Field can have a Widget class passed to its constructor:
->>> class ContactForm(Form):
-...     subject = CharField()
-...     message = CharField(widget=Textarea)
->>> f = ContactForm()
->>> print f['subject']
-<input type="text" name="subject" />
->>> print f['message']
-<textarea name="message"></textarea>
-
-as_textarea() and as_text() are shortcuts for changing the output widget type:
->>> f['subject'].as_textarea()
-u'<textarea name="subject"></textarea>'
->>> f['message'].as_text()
-u'<input type="text" name="message" />'
-
-The 'widget' parameter to a Field can also be an instance:
->>> class ContactForm(Form):
-...     subject = CharField()
-...     message = CharField(widget=Textarea(attrs={'rows': 80, 'cols': 20}))
->>> f = ContactForm()
->>> print f['message']
-<textarea rows="80" cols="20" name="message"></textarea>
-
-Instance-level attrs are *not* carried over to as_textarea() and as_text():
->>> f['message'].as_text()
-u'<input type="text" name="message" />'
->>> f = ContactForm({'subject': 'Hello', 'message': 'I love you.'})
->>> f['subject'].as_textarea()
-u'<textarea name="subject">Hello</textarea>'
->>> f['message'].as_text()
-u'<input type="text" name="message" value="I love you." />'
 """
 
-from django.utils.html import escape
-import datetime
-import re
-import time
-
-# Default encoding for input byte strings.
-DEFAULT_ENCODING = 'utf-8' # TODO: First look at django.conf.settings, then fall back to this.
-
-def smart_unicode(s):
-    if not isinstance(s, unicode):
-        s = unicode(s, DEFAULT_ENCODING)
-    return s
-
-###################
-# VALIDATOR STUFF #
-###################
-
-class ErrorDict(dict):
-    """
-    A collection of errors that knows how to display itself in various formats.
-
-    The dictionary keys are the field names, and the values are the errors.
-    """
-    def __str__(self):
-        return self.as_ul()
-
-    def as_ul(self):
-        if not self: return u''
-        return u'<ul class="errorlist">%s</ul>' % ''.join([u'<li>%s%s</li>' % (k, v) for k, v in self.items()])
-
-    def as_text(self):
-        return u'\n'.join([u'* %s\n%s' % (k, u'\n'.join([u'  * %s' % i for i in v])) for k, v in self.items()])
-
-class ErrorList(list):
-    """
-    A collection of errors that knows how to display itself in various formats.
-    """
-    def __str__(self):
-        return self.as_ul()
-
-    def as_ul(self):
-        if not self: return u''
-        return u'<ul class="errorlist">%s</ul>' % ''.join([u'<li>%s</li>' % e for e in self])
-
-    def as_text(self):
-        if not self: return u''
-        return u'\n'.join([u'* %s' % e for e in self])
-
-class ValidationError(Exception):
-    def __init__(self, message):
-        "ValidationError can be passed a string or a list."
-        if isinstance(message, list):
-            self.messages = ErrorList([smart_unicode(msg) for msg in message])
-        else:
-            assert isinstance(message, basestring), ("%s should be a basestring" % repr(message))
-            message = smart_unicode(message)
-            self.messages = ErrorList([message])
-
-    def __str__(self):
-        # This is needed because, without a __str__(), printing an exception
-        # instance would result in this:
-        # AttributeError: ValidationError instance has no attribute 'args'
-        # See http://www.python.org/doc/current/tut/node10.html#handling
-        return repr(self.messages)
-
-################
-# HTML WIDGETS #
-################
-
-# Converts a dictionary to a single string with key="value", XML-style.
-# Assumes keys do not need to be XML-escaped.
-flatatt = lambda attrs: ' '.join(['%s="%s"' % (k, escape(v)) for k, v in attrs.items()])
-
-class Widget(object):
-    def __init__(self, attrs=None):
-        self.attrs = attrs or {}
-
-    def render(self, name, value):
-        raise NotImplementedError
-
-class TextInput(Widget):
-    """
-    >>> w = TextInput()
-    >>> w.render('email', '')
-    u'<input type="text" name="email" />'
-    >>> w.render('email', None)
-    u'<input type="text" name="email" />'
-    >>> w.render('email', 'test@example.com')
-    u'<input type="text" name="email" value="test@example.com" />'
-    >>> w.render('email', 'some "quoted" & ampersanded value')
-    u'<input type="text" name="email" value="some &quot;quoted&quot; &amp; ampersanded value" />'
-    >>> w.render('email', 'test@example.com', attrs={'class': 'fun'})
-    u'<input type="text" name="email" value="test@example.com" class="fun" />'
-
-    You can also pass 'attrs' to the constructor:
-    >>> w = TextInput(attrs={'class': 'fun'})
-    >>> w.render('email', '')
-    u'<input type="text" class="fun" name="email" />'
-    >>> w.render('email', 'foo@example.com')
-    u'<input type="text" class="fun" value="foo@example.com" name="email" />'
-
-    'attrs' passed to render() get precedence over those passed to the constructor:
-    >>> w = TextInput(attrs={'class': 'pretty'})
-    >>> w.render('email', '', attrs={'class': 'special'})
-    u'<input type="text" class="special" name="email" />'
-    """
-    def render(self, name, value, attrs=None):
-        if value in EMPTY_VALUES: value = ''
-        final_attrs = dict(self.attrs, type='text', name=name)
-        if attrs:
-            final_attrs.update(attrs)
-        if value != '': final_attrs['value'] = value # Only add the 'value' attribute if a value is non-empty.
-        return u'<input %s />' % flatatt(final_attrs)
-
-class Textarea(Widget):
-    """
-    >>> w = Textarea()
-    >>> w.render('msg', '')
-    u'<textarea name="msg"></textarea>'
-    >>> w.render('msg', None)
-    u'<textarea name="msg"></textarea>'
-    >>> w.render('msg', 'value')
-    u'<textarea name="msg">value</textarea>'
-    >>> w.render('msg', 'some "quoted" & ampersanded value')
-    u'<textarea name="msg">some &quot;quoted&quot; &amp; ampersanded value</textarea>'
-    >>> w.render('msg', 'value', attrs={'class': 'pretty'})
-    u'<textarea name="msg" class="pretty">value</textarea>'
-
-    You can also pass 'attrs' to the constructor:
-    >>> w = Textarea(attrs={'class': 'pretty'})
-    >>> w.render('msg', '')
-    u'<textarea class="pretty" name="msg"></textarea>'
-    >>> w.render('msg', 'example')
-    u'<textarea class="pretty" name="msg">example</textarea>'
-
-    'attrs' passed to render() get precedence over those passed to the constructor:
-    >>> w = Textarea(attrs={'class': 'pretty'})
-    >>> w.render('msg', '', attrs={'class': 'special'})
-    u'<textarea class="special" name="msg"></textarea>'
-    """
-    def render(self, name, value, attrs=None):
-        if value in EMPTY_VALUES: value = ''
-        final_attrs = dict(self.attrs, name=name)
-        if attrs:
-            final_attrs.update(attrs)
-        return u'<textarea %s>%s</textarea>' % (flatatt(final_attrs), escape(value))
-
-class CheckboxInput(Widget):
-    """
-    >>> w = CheckboxInput()
-    >>> w.render('is_cool', '')
-    u'<input type="checkbox" name="is_cool" />'
-    >>> w.render('is_cool', False)
-    u'<input type="checkbox" name="is_cool" />'
-    >>> w.render('is_cool', True)
-    u'<input checked="checked" type="checkbox" name="is_cool" />'
-    >>> w.render('is_cool', False, attrs={'class': 'pretty'})
-    u'<input type="checkbox" name="is_cool" class="pretty" />'
-
-    You can also pass 'attrs' to the constructor:
-    >>> w = CheckboxInput(attrs={'class': 'pretty'})
-    >>> w.render('is_cool', '')
-    u'<input type="checkbox" class="pretty" name="is_cool" />'
-
-    'attrs' passed to render() get precedence over those passed to the constructor:
-    >>> w = CheckboxInput(attrs={'class': 'pretty'})
-    >>> w.render('is_cool', '', attrs={'class': 'special'})
-    u'<input type="checkbox" class="special" name="is_cool" />'
-    """
-    def render(self, name, value, attrs=None):
-        final_attrs = dict(self.attrs, type='checkbox', name=name)
-        if attrs:
-            final_attrs.update(attrs)
-        if value: final_attrs['checked'] = 'checked'
-        return u'<input %s />' % flatatt(final_attrs)
-
-##########
-# FIELDS #
-##########
-
-# These values, if given to to_python(), will trigger the self.required check.
-EMPTY_VALUES = (None, '')
-
-class Field(object):
-    widget = TextInput # Default widget to use when rendering this type of Field.
-
-    def __init__(self, required=True, widget=None):
-        self.required = required
-        widget = widget or self.widget
-        if isinstance(widget, type):
-            widget = widget()
-        self.widget = widget
-
-    def to_python(self, value):
-        """
-        Validates the given value and returns its "normalized" value as an
-        appropriate Python object.
-
-        Raises ValidationError for any errors.
-        """
-        if self.required and value in EMPTY_VALUES:
-            raise ValidationError(u'This field is required.')
-        return value
-
-class CharField(Field):
-    """
-    >>> f = CharField(required=False)
-    >>> f.to_python(1)
-    u'1'
-    >>> f.to_python('hello')
-    u'hello'
-    >>> f.to_python(None)
-    u''
-    >>> f.to_python([1, 2, 3])
-    u'[1, 2, 3]'
-
-    CharField accepts an optional max_length parameter:
-    >>> f = CharField(max_length=10, required=False)
-    >>> f.to_python('')
-    u''
-    >>> f.to_python('12345')
-    u'12345'
-    >>> f.to_python('1234567890')
-    u'1234567890'
-    >>> f.to_python('1234567890a')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Ensure this value has at most 10 characters.']
-
-    CharField accepts an optional min_length parameter:
-    >>> f = CharField(min_length=10, required=False)
-    >>> f.to_python('')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Ensure this value has at least 10 characters.']
-    >>> f.to_python('12345')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Ensure this value has at least 10 characters.']
-    >>> f.to_python('1234567890')
-    u'1234567890'
-    >>> f.to_python('1234567890a')
-    u'1234567890a'
-    """
-    def __init__(self, max_length=None, min_length=None, required=True, widget=None):
-        Field.__init__(self, required, widget)
-        self.max_length, self.min_length = max_length, min_length
-
-    def to_python(self, value):
-        "Validates max_length and min_length. Returns a Unicode object."
-        Field.to_python(self, value)
-        if value in EMPTY_VALUES: value = u''
-        if not isinstance(value, basestring):
-            value = unicode(str(value), DEFAULT_ENCODING)
-        elif not isinstance(value, unicode):
-            value = unicode(value, DEFAULT_ENCODING)
-        if self.max_length is not None and len(value) > self.max_length:
-            raise ValidationError(u'Ensure this value has at most %d characters.' % self.max_length)
-        if self.min_length is not None and len(value) < self.min_length:
-            raise ValidationError(u'Ensure this value has at least %d characters.' % self.min_length)
-        return value
-
-class IntegerField(Field):
-    """
-    >>> f = IntegerField()
-    >>> f.to_python('1')
-    1
-    >>> isinstance(f.to_python('1'), int)
-    True
-    >>> f.to_python('23')
-    23
-    >>> f.to_python('a')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a whole number.']
-    >>> f.to_python('1 ')
-    1
-    >>> f.to_python(' 1')
-    1
-    >>> f.to_python(' 1 ')
-    1
-    >>> f.to_python('1a')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a whole number.']
-    """
-    def to_python(self, value):
-        """
-        Validates that int() can be called on the input. Returns the result
-        of int().
-        """
-        super(IntegerField, self).to_python(value)
-        try:
-            return int(value)
-        except (ValueError, TypeError):
-            raise ValidationError(u'Enter a whole number.')
-
-DEFAULT_DATE_INPUT_FORMATS = (
-    '%Y-%m-%d', '%m/%d/%Y', '%m/%d/%y', # '2006-10-25', '10/25/2006', '10/25/06'
-    '%b %d %Y', '%b %d, %Y',            # 'Oct 25 2006', 'Oct 25, 2006'
-    '%d %b %Y', '%d %b, %Y',            # '25 Oct 2006', '25 Oct, 2006'
-    '%B %d %Y', '%B %d, %Y',            # 'October 25 2006', 'October 25, 2006'
-    '%d %B %Y', '%d %B, %Y',            # '25 October 2006', '25 October, 2006'
-)
-
-class DateField(Field):
-    """
-    >>> import datetime
-    >>> f = DateField()
-    >>> f.to_python(datetime.date(2006, 10, 25))
-    datetime.date(2006, 10, 25)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
-    datetime.date(2006, 10, 25)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
-    datetime.date(2006, 10, 25)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('2006-10-25')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('10/25/2006')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('10/25/06')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('Oct 25 2006')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('October 25 2006')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('October 25, 2006')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('25 October 2006')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('25 October, 2006')
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('2006-4-31')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date.']
-    >>> f.to_python('200a-10-25')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date.']
-    >>> f.to_python('25/10/06')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date.']
-    >>> f.to_python(None)
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'This field is required.']
-
-    >>> f = DateField(required=False)
-    >>> f.to_python(None)
-    >>> repr(f.to_python(None))
-    'None'
-    >>> f.to_python('')
-    >>> repr(f.to_python(''))
-    'None'
-
-    DateField accepts an optional input_formats parameter:
-    >>> f = DateField(input_formats=['%Y %m %d'])
-    >>> f.to_python(datetime.date(2006, 10, 25))
-    datetime.date(2006, 10, 25)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
-    datetime.date(2006, 10, 25)
-    >>> f.to_python('2006 10 25')
-    datetime.date(2006, 10, 25)
-
-    The input_formats parameter overrides all default input formats,
-    so the default formats won't work unless you specify them:
-    >>> f.to_python('2006-10-25')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date.']
-    >>> f.to_python('10/25/2006')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date.']
-    >>> f.to_python('10/25/06')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date.']
-    """
-    def __init__(self, input_formats=None, required=True, widget=None):
-        Field.__init__(self, required, widget)
-        self.input_formats = input_formats or DEFAULT_DATE_INPUT_FORMATS
-
-    def to_python(self, value):
-        """
-        Validates that the input can be converted to a date. Returns a Python
-        datetime.date object.
-        """
-        Field.to_python(self, value)
-        if value in EMPTY_VALUES:
-            return None
-        if isinstance(value, datetime.datetime):
-            return value.date()
-        if isinstance(value, datetime.date):
-            return value
-        for format in self.input_formats:
-            try:
-                return datetime.date(*time.strptime(value, format)[:3])
-            except ValueError:
-                continue
-        raise ValidationError(u'Enter a valid date.')
-
-DEFAULT_DATETIME_INPUT_FORMATS = (
-    '%Y-%m-%d %H:%M:%S',     # '2006-10-25 14:30:59'
-    '%Y-%m-%d %H:%M',        # '2006-10-25 14:30'
-    '%Y-%m-%d',              # '2006-10-25'
-    '%m/%d/%Y %H:%M:%S',     # '10/25/2006 14:30:59'
-    '%m/%d/%Y %H:%M',        # '10/25/2006 14:30'
-    '%m/%d/%Y',              # '10/25/2006'
-    '%m/%d/%y %H:%M:%S',     # '10/25/06 14:30:59'
-    '%m/%d/%y %H:%M',        # '10/25/06 14:30'
-    '%m/%d/%y',              # '10/25/06'
-)
-
-class DateTimeField(Field):
-    """
-    >>> import datetime
-    >>> f = DateTimeField()
-    >>> f.to_python(datetime.date(2006, 10, 25))
-    datetime.datetime(2006, 10, 25, 0, 0)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
-    datetime.datetime(2006, 10, 25, 14, 30, 59)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
-    datetime.datetime(2006, 10, 25, 14, 30, 59, 200)
-    >>> f.to_python('2006-10-25 14:30:45')
-    datetime.datetime(2006, 10, 25, 14, 30, 45)
-    >>> f.to_python('2006-10-25 14:30:00')
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python('2006-10-25 14:30')
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python('2006-10-25')
-    datetime.datetime(2006, 10, 25, 0, 0)
-    >>> f.to_python('10/25/2006 14:30:45')
-    datetime.datetime(2006, 10, 25, 14, 30, 45)
-    >>> f.to_python('10/25/2006 14:30:00')
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python('10/25/2006 14:30')
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python('10/25/2006')
-    datetime.datetime(2006, 10, 25, 0, 0)
-    >>> f.to_python('10/25/06 14:30:45')
-    datetime.datetime(2006, 10, 25, 14, 30, 45)
-    >>> f.to_python('10/25/06 14:30:00')
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python('10/25/06 14:30')
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python('10/25/06')
-    datetime.datetime(2006, 10, 25, 0, 0)
-    >>> f.to_python('hello')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date/time.']
-    >>> f.to_python('2006-10-25 4:30 p.m.')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date/time.']
-
-    DateField accepts an optional input_formats parameter:
-    >>> f = DateTimeField(input_formats=['%Y %m %d %I:%M %p'])
-    >>> f.to_python(datetime.date(2006, 10, 25))
-    datetime.datetime(2006, 10, 25, 0, 0)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
-    datetime.datetime(2006, 10, 25, 14, 30)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
-    datetime.datetime(2006, 10, 25, 14, 30, 59)
-    >>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
-    datetime.datetime(2006, 10, 25, 14, 30, 59, 200)
-    >>> f.to_python('2006 10 25 2:30 PM')
-    datetime.datetime(2006, 10, 25, 14, 30)
-
-    The input_formats parameter overrides all default input formats,
-    so the default formats won't work unless you specify them:
-    >>> f.to_python('2006-10-25 14:30:45')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid date/time.']
-    """
-    def __init__(self, input_formats=None, required=True, widget=None):
-        Field.__init__(self, required, widget)
-        self.input_formats = input_formats or DEFAULT_DATETIME_INPUT_FORMATS
-
-    def to_python(self, value):
-        """
-        Validates that the input can be converted to a datetime. Returns a
-        Python datetime.datetime object.
-        """
-        Field.to_python(self, value)
-        if value in EMPTY_VALUES:
-            return None
-        if isinstance(value, datetime.datetime):
-            return value
-        if isinstance(value, datetime.date):
-            return datetime.datetime(value.year, value.month, value.day)
-        for format in self.input_formats:
-            try:
-                return datetime.datetime(*time.strptime(value, format)[:6])
-            except ValueError:
-                continue
-        raise ValidationError(u'Enter a valid date/time.')
-
-class RegexField(Field):
-    """
-    >>> import re
-
-    >>> f = RegexField('^\d[A-F]\d$')
-    >>> f.to_python('2A2')
-    u'2A2'
-    >>> f.to_python('3F3')
-    u'3F3'
-    >>> f.to_python('3G3')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid value.']
-    >>> f.to_python(' 2A2')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid value.']
-    >>> f.to_python('2A2 ')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid value.']
-
-    Alternatively, RegexField can take a compiled regular expression:
-    >>> f = RegexField(re.compile('^\d[A-F]\d$'))
-    >>> f.to_python('2A2')
-    u'2A2'
-    >>> f.to_python('3F3')
-    u'3F3'
-    >>> f.to_python('3G3')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid value.']
-    >>> f.to_python(' 2A2')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid value.']
-    >>> f.to_python('2A2 ')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid value.']
-
-    RegexField takes an optional error_message argument:
-    >>> f = RegexField('^\d\d\d\d$', 'Enter a four-digit number.')
-    >>> f.to_python('1234')
-    u'1234'
-    >>> f.to_python('123')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a four-digit number.']
-    >>> f.to_python('abcd')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a four-digit number.']
-    """
-    def __init__(self, regex, error_message=None, required=True, widget=None):
-        """
-        regex can be either a string or a compiled regular expression object.
-        error_message is an optional error message to use, if
-        'Enter a valid value' is too generic for you.
-        """
-        Field.__init__(self, required, widget)
-        if isinstance(regex, basestring):
-            regex = re.compile(regex)
-        self.regex = regex
-        self.error_message = error_message or u'Enter a valid value.'
-
-    def to_python(self, value):
-        """
-        Validates that the input matches the regular expression. Returns a
-        Unicode object.
-        """
-        Field.to_python(self, value)
-        if value in EMPTY_VALUES: value = u''
-        if not isinstance(value, basestring):
-            value = unicode(str(value), DEFAULT_ENCODING)
-        elif not isinstance(value, unicode):
-            value = unicode(value, DEFAULT_ENCODING)
-        if not self.regex.search(value):
-            raise ValidationError(self.error_message)
-        return value
-
-email_re = re.compile(
-    r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*"  # dot-atom
-    r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|\\[\001-011\013\014\016-\177])*"' # quoted-string
-    r')@(?:[A-Z0-9-]+\.)+[A-Z]{2,6}$', re.IGNORECASE)  # domain
-
-class EmailField(RegexField):
-    """
-    >>> f = EmailField()
-    >>> f.to_python('person@example.com')
-    u'person@example.com'
-    >>> f.to_python('foo')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid e-mail address.']
-    >>> f.to_python('foo@')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid e-mail address.']
-    >>> f.to_python('foo@bar')
-    Traceback (most recent call last):
-    ...
-    ValidationError: [u'Enter a valid e-mail address.']
-    """
-    def __init__(self, required=True, widget=None):
-        RegexField.__init__(self, email_re, u'Enter a valid e-mail address.', required, widget)
-
-class BooleanField(Field):
-    """
-    >>> f = BooleanField()
-    >>> f.to_python(True)
-    True
-    >>> f.to_python(False)
-    False
-    >>> f.to_python(1)
-    True
-    >>> f.to_python(0)
-    False
-    >>> f.to_python('Django rocks')
-    True
-    """
-    widget = CheckboxInput
-
-    def to_python(self, value):
-        "Returns a Python boolean object."
-        Field.to_python(self, value)
-        return bool(value)
-
-#########
-# FORMS #
-#########
-
-class DeclarativeFieldsMetaclass(type):
-    "Metaclass that converts Field attributes to a dictionary called 'fields'."
-    def __new__(cls, name, bases, attrs):
-        attrs['fields'] = dict([(name, attrs.pop(name)) for name, obj in attrs.items() if isinstance(obj, Field)])
-        return type.__new__(cls, name, bases, attrs)
-
-class Form(object):
-    "A collection of Fields, plus their associated data."
-    __metaclass__ = DeclarativeFieldsMetaclass
-
-    def __init__(self, data=None): # TODO: prefix stuff
-        self.data = data or {}
-        self.__data_python = None # Stores the data after to_python() has been called.
-        self.__errors = None # Stores the errors after to_python() has been called.
-
-    def __iter__(self):
-        for name, field in self.fields.items():
-            yield BoundField(self, field, name)
-
-    def to_python(self):
-        if self.__errors is None:
-            self._validate()
-        return self.__data_python
-
-    def errors(self):
-        "Returns an ErrorDict for self.data"
-        if self.__errors is None:
-            self._validate()
-        return self.__errors
-
-    def is_valid(self):
-        """
-        Returns True if the form has no errors. Otherwise, False. This exists
-        solely for convenience, so client code can use positive logic rather
-        than confusing negative logic ("if not form.errors()").
-        """
-        return not bool(self.errors())
-
-    def __getitem__(self, name):
-        "Returns a BoundField with the given name."
-        try:
-            field = self.fields[name]
-        except KeyError:
-            raise KeyError('Key %r not found in Form' % name)
-        return BoundField(self, field, name)
-
-    def _validate(self):
-        data_python = {}
-        errors = ErrorDict()
-        for name, field in self.fields.items():
-            try:
-                value = field.to_python(self.data.get(name, None))
-                data_python[name] = value
-            except ValidationError, e:
-                errors[name] = e.messages
-        if not errors: # Only set self.data_python if there weren't errors.
-            self.__data_python = data_python
-        self.__errors = errors
-
-class BoundField(object):
-    "A Field plus data"
-    def __init__(self, form, field, name):
-        self._form = form
-        self._field = field
-        self._name = name
-
-    def __str__(self):
-        "Renders this field as an HTML widget."
-        # Use the 'widget' attribute on the field to determine which type
-        # of HTML widget to use.
-        return self.as_widget(self._field.widget)
-
-    def _errors(self):
-        """
-        Returns an ErrorList for this field. Returns an empty ErrorList
-        if there are none.
-        """
-        try:
-            return self._form.errors()[self._name]
-        except KeyError:
-            return ErrorList()
-    errors = property(_errors)
-
-    def as_widget(self, widget, attrs=None):
-        return widget.render(self._name, self._form.data.get(self._name, None), attrs=attrs)
-
-    def as_text(self, attrs=None):
-        """
-        Returns a string of HTML for representing this as an <input type="text">.
-        """
-        return self.as_widget(TextInput(), attrs)
-
-    def as_textarea(self, attrs=None):
-        "Returns a string of HTML for representing this as a <textarea>."
-        return self.as_widget(Textarea(), attrs)
+from widgets import *
+from fields import *
+from forms import Form
 
 ##########################
 # DATABASE API SHORTCUTS #
@@ -863,7 +27,3 @@ def form_for_model(model):
 def form_for_fields(field_list):
     "Returns a Form instance for the given list of Django database field instances."
     raise NotImplementedError
-
-if __name__ == "__main__":
-    import doctest
-    doctest.testmod()
diff --git a/django/newforms/fields.py b/django/newforms/fields.py
new file mode 100644
index 0000000000000..ea401fdfab137
--- /dev/null
+++ b/django/newforms/fields.py
@@ -0,0 +1,184 @@
+"""
+Field classes
+"""
+
+from util import ValidationError, DEFAULT_ENCODING
+from widgets import TextInput, CheckboxInput
+import datetime
+import re
+import time
+
+__all__ = (
+    'Field', 'CharField', 'IntegerField',
+    'DEFAULT_DATE_INPUT_FORMATS', 'DateField',
+    'DEFAULT_DATETIME_INPUT_FORMATS', 'DateTimeField',
+    'RegexField', 'EmailField', 'BooleanField',
+)
+
+# These values, if given to to_python(), will trigger the self.required check.
+EMPTY_VALUES = (None, '')
+
+class Field(object):
+    widget = TextInput # Default widget to use when rendering this type of Field.
+
+    def __init__(self, required=True, widget=None):
+        self.required = required
+        widget = widget or self.widget
+        if isinstance(widget, type):
+            widget = widget()
+        self.widget = widget
+
+    def to_python(self, value):
+        """
+        Validates the given value and returns its "normalized" value as an
+        appropriate Python object.
+
+        Raises ValidationError for any errors.
+        """
+        if self.required and value in EMPTY_VALUES:
+            raise ValidationError(u'This field is required.')
+        return value
+
+class CharField(Field):
+    def __init__(self, max_length=None, min_length=None, required=True, widget=None):
+        Field.__init__(self, required, widget)
+        self.max_length, self.min_length = max_length, min_length
+
+    def to_python(self, value):
+        "Validates max_length and min_length. Returns a Unicode object."
+        Field.to_python(self, value)
+        if value in EMPTY_VALUES: value = u''
+        if not isinstance(value, basestring):
+            value = unicode(str(value), DEFAULT_ENCODING)
+        elif not isinstance(value, unicode):
+            value = unicode(value, DEFAULT_ENCODING)
+        if self.max_length is not None and len(value) > self.max_length:
+            raise ValidationError(u'Ensure this value has at most %d characters.' % self.max_length)
+        if self.min_length is not None and len(value) < self.min_length:
+            raise ValidationError(u'Ensure this value has at least %d characters.' % self.min_length)
+        return value
+
+class IntegerField(Field):
+    def to_python(self, value):
+        """
+        Validates that int() can be called on the input. Returns the result
+        of int().
+        """
+        super(IntegerField, self).to_python(value)
+        try:
+            return int(value)
+        except (ValueError, TypeError):
+            raise ValidationError(u'Enter a whole number.')
+
+DEFAULT_DATE_INPUT_FORMATS = (
+    '%Y-%m-%d', '%m/%d/%Y', '%m/%d/%y', # '2006-10-25', '10/25/2006', '10/25/06'
+    '%b %d %Y', '%b %d, %Y',            # 'Oct 25 2006', 'Oct 25, 2006'
+    '%d %b %Y', '%d %b, %Y',            # '25 Oct 2006', '25 Oct, 2006'
+    '%B %d %Y', '%B %d, %Y',            # 'October 25 2006', 'October 25, 2006'
+    '%d %B %Y', '%d %B, %Y',            # '25 October 2006', '25 October, 2006'
+)
+
+class DateField(Field):
+    def __init__(self, input_formats=None, required=True, widget=None):
+        Field.__init__(self, required, widget)
+        self.input_formats = input_formats or DEFAULT_DATE_INPUT_FORMATS
+
+    def to_python(self, value):
+        """
+        Validates that the input can be converted to a date. Returns a Python
+        datetime.date object.
+        """
+        Field.to_python(self, value)
+        if value in EMPTY_VALUES:
+            return None
+        if isinstance(value, datetime.datetime):
+            return value.date()
+        if isinstance(value, datetime.date):
+            return value
+        for format in self.input_formats:
+            try:
+                return datetime.date(*time.strptime(value, format)[:3])
+            except ValueError:
+                continue
+        raise ValidationError(u'Enter a valid date.')
+
+DEFAULT_DATETIME_INPUT_FORMATS = (
+    '%Y-%m-%d %H:%M:%S',     # '2006-10-25 14:30:59'
+    '%Y-%m-%d %H:%M',        # '2006-10-25 14:30'
+    '%Y-%m-%d',              # '2006-10-25'
+    '%m/%d/%Y %H:%M:%S',     # '10/25/2006 14:30:59'
+    '%m/%d/%Y %H:%M',        # '10/25/2006 14:30'
+    '%m/%d/%Y',              # '10/25/2006'
+    '%m/%d/%y %H:%M:%S',     # '10/25/06 14:30:59'
+    '%m/%d/%y %H:%M',        # '10/25/06 14:30'
+    '%m/%d/%y',              # '10/25/06'
+)
+
+class DateTimeField(Field):
+    def __init__(self, input_formats=None, required=True, widget=None):
+        Field.__init__(self, required, widget)
+        self.input_formats = input_formats or DEFAULT_DATETIME_INPUT_FORMATS
+
+    def to_python(self, value):
+        """
+        Validates that the input can be converted to a datetime. Returns a
+        Python datetime.datetime object.
+        """
+        Field.to_python(self, value)
+        if value in EMPTY_VALUES:
+            return None
+        if isinstance(value, datetime.datetime):
+            return value
+        if isinstance(value, datetime.date):
+            return datetime.datetime(value.year, value.month, value.day)
+        for format in self.input_formats:
+            try:
+                return datetime.datetime(*time.strptime(value, format)[:6])
+            except ValueError:
+                continue
+        raise ValidationError(u'Enter a valid date/time.')
+
+class RegexField(Field):
+    def __init__(self, regex, error_message=None, required=True, widget=None):
+        """
+        regex can be either a string or a compiled regular expression object.
+        error_message is an optional error message to use, if
+        'Enter a valid value' is too generic for you.
+        """
+        Field.__init__(self, required, widget)
+        if isinstance(regex, basestring):
+            regex = re.compile(regex)
+        self.regex = regex
+        self.error_message = error_message or u'Enter a valid value.'
+
+    def to_python(self, value):
+        """
+        Validates that the input matches the regular expression. Returns a
+        Unicode object.
+        """
+        Field.to_python(self, value)
+        if value in EMPTY_VALUES: value = u''
+        if not isinstance(value, basestring):
+            value = unicode(str(value), DEFAULT_ENCODING)
+        elif not isinstance(value, unicode):
+            value = unicode(value, DEFAULT_ENCODING)
+        if not self.regex.search(value):
+            raise ValidationError(self.error_message)
+        return value
+
+email_re = re.compile(
+    r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*"  # dot-atom
+    r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|\\[\001-011\013\014\016-\177])*"' # quoted-string
+    r')@(?:[A-Z0-9-]+\.)+[A-Z]{2,6}$', re.IGNORECASE)  # domain
+
+class EmailField(RegexField):
+    def __init__(self, required=True, widget=None):
+        RegexField.__init__(self, email_re, u'Enter a valid e-mail address.', required, widget)
+
+class BooleanField(Field):
+    widget = CheckboxInput
+
+    def to_python(self, value):
+        "Returns a Python boolean object."
+        Field.to_python(self, value)
+        return bool(value)
diff --git a/django/newforms/forms.py b/django/newforms/forms.py
new file mode 100644
index 0000000000000..34e13c65423fe
--- /dev/null
+++ b/django/newforms/forms.py
@@ -0,0 +1,103 @@
+"""
+Form classes
+"""
+
+from fields import Field
+from widgets import TextInput, Textarea
+from util import ErrorDict, ErrorList, ValidationError
+
+class DeclarativeFieldsMetaclass(type):
+    "Metaclass that converts Field attributes to a dictionary called 'fields'."
+    def __new__(cls, name, bases, attrs):
+        attrs['fields'] = dict([(name, attrs.pop(name)) for name, obj in attrs.items() if isinstance(obj, Field)])
+        return type.__new__(cls, name, bases, attrs)
+
+class Form(object):
+    "A collection of Fields, plus their associated data."
+    __metaclass__ = DeclarativeFieldsMetaclass
+
+    def __init__(self, data=None): # TODO: prefix stuff
+        self.data = data or {}
+        self.__data_python = None # Stores the data after to_python() has been called.
+        self.__errors = None # Stores the errors after to_python() has been called.
+
+    def __iter__(self):
+        for name, field in self.fields.items():
+            yield BoundField(self, field, name)
+
+    def to_python(self):
+        if self.__errors is None:
+            self._validate()
+        return self.__data_python
+
+    def errors(self):
+        "Returns an ErrorDict for self.data"
+        if self.__errors is None:
+            self._validate()
+        return self.__errors
+
+    def is_valid(self):
+        """
+        Returns True if the form has no errors. Otherwise, False. This exists
+        solely for convenience, so client code can use positive logic rather
+        than confusing negative logic ("if not form.errors()").
+        """
+        return not bool(self.errors())
+
+    def __getitem__(self, name):
+        "Returns a BoundField with the given name."
+        try:
+            field = self.fields[name]
+        except KeyError:
+            raise KeyError('Key %r not found in Form' % name)
+        return BoundField(self, field, name)
+
+    def _validate(self):
+        data_python = {}
+        errors = ErrorDict()
+        for name, field in self.fields.items():
+            try:
+                value = field.to_python(self.data.get(name, None))
+                data_python[name] = value
+            except ValidationError, e:
+                errors[name] = e.messages
+        if not errors: # Only set self.data_python if there weren't errors.
+            self.__data_python = data_python
+        self.__errors = errors
+
+class BoundField(object):
+    "A Field plus data"
+    def __init__(self, form, field, name):
+        self._form = form
+        self._field = field
+        self._name = name
+
+    def __str__(self):
+        "Renders this field as an HTML widget."
+        # Use the 'widget' attribute on the field to determine which type
+        # of HTML widget to use.
+        return self.as_widget(self._field.widget)
+
+    def _errors(self):
+        """
+        Returns an ErrorList for this field. Returns an empty ErrorList
+        if there are none.
+        """
+        try:
+            return self._form.errors()[self._name]
+        except KeyError:
+            return ErrorList()
+    errors = property(_errors)
+
+    def as_widget(self, widget, attrs=None):
+        return widget.render(self._name, self._form.data.get(self._name, None), attrs=attrs)
+
+    def as_text(self, attrs=None):
+        """
+        Returns a string of HTML for representing this as an <input type="text">.
+        """
+        return self.as_widget(TextInput(), attrs)
+
+    def as_textarea(self, attrs=None):
+        "Returns a string of HTML for representing this as a <textarea>."
+        return self.as_widget(Textarea(), attrs)
diff --git a/django/newforms/util.py b/django/newforms/util.py
new file mode 100644
index 0000000000000..3887010c8588a
--- /dev/null
+++ b/django/newforms/util.py
@@ -0,0 +1,55 @@
+# Default encoding for input byte strings.
+DEFAULT_ENCODING = 'utf-8' # TODO: First look at django.conf.settings, then fall back to this.
+
+def smart_unicode(s):
+    if not isinstance(s, unicode):
+        s = unicode(s, DEFAULT_ENCODING)
+    return s
+
+class ErrorDict(dict):
+    """
+    A collection of errors that knows how to display itself in various formats.
+
+    The dictionary keys are the field names, and the values are the errors.
+    """
+    def __str__(self):
+        return self.as_ul()
+
+    def as_ul(self):
+        if not self: return u''
+        return u'<ul class="errorlist">%s</ul>' % ''.join([u'<li>%s%s</li>' % (k, v) for k, v in self.items()])
+
+    def as_text(self):
+        return u'\n'.join([u'* %s\n%s' % (k, u'\n'.join([u'  * %s' % i for i in v])) for k, v in self.items()])
+
+class ErrorList(list):
+    """
+    A collection of errors that knows how to display itself in various formats.
+    """
+    def __str__(self):
+        return self.as_ul()
+
+    def as_ul(self):
+        if not self: return u''
+        return u'<ul class="errorlist">%s</ul>' % ''.join([u'<li>%s</li>' % e for e in self])
+
+    def as_text(self):
+        if not self: return u''
+        return u'\n'.join([u'* %s' % e for e in self])
+
+class ValidationError(Exception):
+    def __init__(self, message):
+        "ValidationError can be passed a string or a list."
+        if isinstance(message, list):
+            self.messages = ErrorList([smart_unicode(msg) for msg in message])
+        else:
+            assert isinstance(message, basestring), ("%s should be a basestring" % repr(message))
+            message = smart_unicode(message)
+            self.messages = ErrorList([message])
+
+    def __str__(self):
+        # This is needed because, without a __str__(), printing an exception
+        # instance would result in this:
+        # AttributeError: ValidationError instance has no attribute 'args'
+        # See http://www.python.org/doc/current/tut/node10.html#handling
+        return repr(self.messages)
diff --git a/django/newforms/widgets.py b/django/newforms/widgets.py
new file mode 100644
index 0000000000000..2241a54c07e9b
--- /dev/null
+++ b/django/newforms/widgets.py
@@ -0,0 +1,43 @@
+"""
+HTML Widget classes
+"""
+
+__all__ = ('Widget', 'TextInput', 'Textarea', 'CheckboxInput')
+
+from django.utils.html import escape
+
+# Converts a dictionary to a single string with key="value", XML-style.
+# Assumes keys do not need to be XML-escaped.
+flatatt = lambda attrs: ' '.join(['%s="%s"' % (k, escape(v)) for k, v in attrs.items()])
+
+class Widget(object):
+    def __init__(self, attrs=None):
+        self.attrs = attrs or {}
+
+    def render(self, name, value):
+        raise NotImplementedError
+
+class TextInput(Widget):
+    def render(self, name, value, attrs=None):
+        if value is None: value = ''
+        final_attrs = dict(self.attrs, type='text', name=name)
+        if attrs:
+            final_attrs.update(attrs)
+        if value != '': final_attrs['value'] = value # Only add the 'value' attribute if a value is non-empty.
+        return u'<input %s />' % flatatt(final_attrs)
+
+class Textarea(Widget):
+    def render(self, name, value, attrs=None):
+        if value is None: value = ''
+        final_attrs = dict(self.attrs, name=name)
+        if attrs:
+            final_attrs.update(attrs)
+        return u'<textarea %s>%s</textarea>' % (flatatt(final_attrs), escape(value))
+
+class CheckboxInput(Widget):
+    def render(self, name, value, attrs=None):
+        final_attrs = dict(self.attrs, type='checkbox', name=name)
+        if attrs:
+            final_attrs.update(attrs)
+        if value: final_attrs['checked'] = 'checked'
+        return u'<input %s />' % flatatt(final_attrs)
diff --git a/tests/regressiontests/forms/__init__.py b/tests/regressiontests/forms/__init__.py
new file mode 100644
index 0000000000000..e69de29bb2d1d
diff --git a/tests/regressiontests/forms/models.py b/tests/regressiontests/forms/models.py
new file mode 100644
index 0000000000000..e69de29bb2d1d
diff --git a/tests/regressiontests/forms/tests.py b/tests/regressiontests/forms/tests.py
new file mode 100644
index 0000000000000..80c8847986f60
--- /dev/null
+++ b/tests/regressiontests/forms/tests.py
@@ -0,0 +1,481 @@
+"""
+>>> from django.newforms import *
+>>> import datetime
+>>> import re
+
+# TextInput Widget ############################################################
+
+>>> w = TextInput()
+>>> w.render('email', '')
+u'<input type="text" name="email" />'
+>>> w.render('email', None)
+u'<input type="text" name="email" />'
+>>> w.render('email', 'test@example.com')
+u'<input type="text" name="email" value="test@example.com" />'
+>>> w.render('email', 'some "quoted" & ampersanded value')
+u'<input type="text" name="email" value="some &quot;quoted&quot; &amp; ampersanded value" />'
+>>> w.render('email', 'test@example.com', attrs={'class': 'fun'})
+u'<input type="text" name="email" value="test@example.com" class="fun" />'
+
+You can also pass 'attrs' to the constructor:
+>>> w = TextInput(attrs={'class': 'fun'})
+>>> w.render('email', '')
+u'<input type="text" class="fun" name="email" />'
+>>> w.render('email', 'foo@example.com')
+u'<input type="text" class="fun" value="foo@example.com" name="email" />'
+
+'attrs' passed to render() get precedence over those passed to the constructor:
+>>> w = TextInput(attrs={'class': 'pretty'})
+>>> w.render('email', '', attrs={'class': 'special'})
+u'<input type="text" class="special" name="email" />'
+
+# Textarea Widget #############################################################
+
+>>> w = Textarea()
+>>> w.render('msg', '')
+u'<textarea name="msg"></textarea>'
+>>> w.render('msg', None)
+u'<textarea name="msg"></textarea>'
+>>> w.render('msg', 'value')
+u'<textarea name="msg">value</textarea>'
+>>> w.render('msg', 'some "quoted" & ampersanded value')
+u'<textarea name="msg">some &quot;quoted&quot; &amp; ampersanded value</textarea>'
+>>> w.render('msg', 'value', attrs={'class': 'pretty'})
+u'<textarea name="msg" class="pretty">value</textarea>'
+
+You can also pass 'attrs' to the constructor:
+>>> w = Textarea(attrs={'class': 'pretty'})
+>>> w.render('msg', '')
+u'<textarea class="pretty" name="msg"></textarea>'
+>>> w.render('msg', 'example')
+u'<textarea class="pretty" name="msg">example</textarea>'
+
+'attrs' passed to render() get precedence over those passed to the constructor:
+>>> w = Textarea(attrs={'class': 'pretty'})
+>>> w.render('msg', '', attrs={'class': 'special'})
+u'<textarea class="special" name="msg"></textarea>'
+
+# CheckboxInput Widget ########################################################
+
+>>> w = CheckboxInput()
+>>> w.render('is_cool', '')
+u'<input type="checkbox" name="is_cool" />'
+>>> w.render('is_cool', False)
+u'<input type="checkbox" name="is_cool" />'
+>>> w.render('is_cool', True)
+u'<input checked="checked" type="checkbox" name="is_cool" />'
+>>> w.render('is_cool', False, attrs={'class': 'pretty'})
+u'<input type="checkbox" name="is_cool" class="pretty" />'
+
+You can also pass 'attrs' to the constructor:
+>>> w = CheckboxInput(attrs={'class': 'pretty'})
+>>> w.render('is_cool', '')
+u'<input type="checkbox" class="pretty" name="is_cool" />'
+
+'attrs' passed to render() get precedence over those passed to the constructor:
+>>> w = CheckboxInput(attrs={'class': 'pretty'})
+>>> w.render('is_cool', '', attrs={'class': 'special'})
+u'<input type="checkbox" class="special" name="is_cool" />'
+
+# CharField ###################################################################
+
+>>> f = CharField(required=False)
+>>> f.to_python(1)
+u'1'
+>>> f.to_python('hello')
+u'hello'
+>>> f.to_python(None)
+u''
+>>> f.to_python([1, 2, 3])
+u'[1, 2, 3]'
+
+CharField accepts an optional max_length parameter:
+>>> f = CharField(max_length=10, required=False)
+>>> f.to_python('')
+u''
+>>> f.to_python('12345')
+u'12345'
+>>> f.to_python('1234567890')
+u'1234567890'
+>>> f.to_python('1234567890a')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at most 10 characters.']
+
+CharField accepts an optional min_length parameter:
+>>> f = CharField(min_length=10, required=False)
+>>> f.to_python('')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at least 10 characters.']
+>>> f.to_python('12345')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at least 10 characters.']
+>>> f.to_python('1234567890')
+u'1234567890'
+>>> f.to_python('1234567890a')
+u'1234567890a'
+
+# IntegerField ################################################################
+
+>>> f = IntegerField()
+>>> f.to_python('1')
+1
+>>> isinstance(f.to_python('1'), int)
+True
+>>> f.to_python('23')
+23
+>>> f.to_python('a')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a whole number.']
+>>> f.to_python('1 ')
+1
+>>> f.to_python(' 1')
+1
+>>> f.to_python(' 1 ')
+1
+>>> f.to_python('1a')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a whole number.']
+
+# DateField ###################################################################
+
+>>> import datetime
+>>> f = DateField()
+>>> f.to_python(datetime.date(2006, 10, 25))
+datetime.date(2006, 10, 25)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
+datetime.date(2006, 10, 25)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
+datetime.date(2006, 10, 25)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
+datetime.date(2006, 10, 25)
+>>> f.to_python('2006-10-25')
+datetime.date(2006, 10, 25)
+>>> f.to_python('10/25/2006')
+datetime.date(2006, 10, 25)
+>>> f.to_python('10/25/06')
+datetime.date(2006, 10, 25)
+>>> f.to_python('Oct 25 2006')
+datetime.date(2006, 10, 25)
+>>> f.to_python('October 25 2006')
+datetime.date(2006, 10, 25)
+>>> f.to_python('October 25, 2006')
+datetime.date(2006, 10, 25)
+>>> f.to_python('25 October 2006')
+datetime.date(2006, 10, 25)
+>>> f.to_python('25 October, 2006')
+datetime.date(2006, 10, 25)
+>>> f.to_python('2006-4-31')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date.']
+>>> f.to_python('200a-10-25')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date.']
+>>> f.to_python('25/10/06')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date.']
+>>> f.to_python(None)
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+
+>>> f = DateField(required=False)
+>>> f.to_python(None)
+>>> repr(f.to_python(None))
+'None'
+>>> f.to_python('')
+>>> repr(f.to_python(''))
+'None'
+
+DateField accepts an optional input_formats parameter:
+>>> f = DateField(input_formats=['%Y %m %d'])
+>>> f.to_python(datetime.date(2006, 10, 25))
+datetime.date(2006, 10, 25)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
+datetime.date(2006, 10, 25)
+>>> f.to_python('2006 10 25')
+datetime.date(2006, 10, 25)
+
+The input_formats parameter overrides all default input formats,
+so the default formats won't work unless you specify them:
+>>> f.to_python('2006-10-25')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date.']
+>>> f.to_python('10/25/2006')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date.']
+>>> f.to_python('10/25/06')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date.']
+
+# DateTimeField ###############################################################
+
+>>> import datetime
+>>> f = DateTimeField()
+>>> f.to_python(datetime.date(2006, 10, 25))
+datetime.datetime(2006, 10, 25, 0, 0)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
+datetime.datetime(2006, 10, 25, 14, 30, 59)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
+datetime.datetime(2006, 10, 25, 14, 30, 59, 200)
+>>> f.to_python('2006-10-25 14:30:45')
+datetime.datetime(2006, 10, 25, 14, 30, 45)
+>>> f.to_python('2006-10-25 14:30:00')
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python('2006-10-25 14:30')
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python('2006-10-25')
+datetime.datetime(2006, 10, 25, 0, 0)
+>>> f.to_python('10/25/2006 14:30:45')
+datetime.datetime(2006, 10, 25, 14, 30, 45)
+>>> f.to_python('10/25/2006 14:30:00')
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python('10/25/2006 14:30')
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python('10/25/2006')
+datetime.datetime(2006, 10, 25, 0, 0)
+>>> f.to_python('10/25/06 14:30:45')
+datetime.datetime(2006, 10, 25, 14, 30, 45)
+>>> f.to_python('10/25/06 14:30:00')
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python('10/25/06 14:30')
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python('10/25/06')
+datetime.datetime(2006, 10, 25, 0, 0)
+>>> f.to_python('hello')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date/time.']
+>>> f.to_python('2006-10-25 4:30 p.m.')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date/time.']
+
+DateField accepts an optional input_formats parameter:
+>>> f = DateTimeField(input_formats=['%Y %m %d %I:%M %p'])
+>>> f.to_python(datetime.date(2006, 10, 25))
+datetime.datetime(2006, 10, 25, 0, 0)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30))
+datetime.datetime(2006, 10, 25, 14, 30)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59))
+datetime.datetime(2006, 10, 25, 14, 30, 59)
+>>> f.to_python(datetime.datetime(2006, 10, 25, 14, 30, 59, 200))
+datetime.datetime(2006, 10, 25, 14, 30, 59, 200)
+>>> f.to_python('2006 10 25 2:30 PM')
+datetime.datetime(2006, 10, 25, 14, 30)
+
+The input_formats parameter overrides all default input formats,
+so the default formats won't work unless you specify them:
+>>> f.to_python('2006-10-25 14:30:45')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid date/time.']
+
+# RegexField ##################################################################
+
+>>> f = RegexField('^\d[A-F]\d$')
+>>> f.to_python('2A2')
+u'2A2'
+>>> f.to_python('3F3')
+u'3F3'
+>>> f.to_python('3G3')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid value.']
+>>> f.to_python(' 2A2')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid value.']
+>>> f.to_python('2A2 ')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid value.']
+
+Alternatively, RegexField can take a compiled regular expression:
+>>> f = RegexField(re.compile('^\d[A-F]\d$'))
+>>> f.to_python('2A2')
+u'2A2'
+>>> f.to_python('3F3')
+u'3F3'
+>>> f.to_python('3G3')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid value.']
+>>> f.to_python(' 2A2')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid value.']
+>>> f.to_python('2A2 ')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid value.']
+
+RegexField takes an optional error_message argument:
+>>> f = RegexField('^\d\d\d\d$', 'Enter a four-digit number.')
+>>> f.to_python('1234')
+u'1234'
+>>> f.to_python('123')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a four-digit number.']
+>>> f.to_python('abcd')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a four-digit number.']
+
+# EmailField ##################################################################
+
+>>> f = EmailField()
+>>> f.to_python('person@example.com')
+u'person@example.com'
+>>> f.to_python('foo')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid e-mail address.']
+>>> f.to_python('foo@')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid e-mail address.']
+>>> f.to_python('foo@bar')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid e-mail address.']
+
+# BooleanField ################################################################
+
+>>> f = BooleanField()
+>>> f.to_python(True)
+True
+>>> f.to_python(False)
+False
+>>> f.to_python(1)
+True
+>>> f.to_python(0)
+False
+>>> f.to_python('Django rocks')
+True
+
+# Form ########################################################################
+
+>>> class Person(Form):
+...     first_name = CharField()
+...     last_name = CharField()
+...     birthday = DateField()
+>>> p = Person({'first_name': u'John', 'last_name': u'Lennon', 'birthday': u'1940-10-9'})
+>>> p.errors()
+{}
+>>> p.is_valid()
+True
+>>> p.errors().as_ul()
+u''
+>>> p.errors().as_text()
+u''
+>>> p.to_python()
+{'first_name': u'John', 'last_name': u'Lennon', 'birthday': datetime.date(1940, 10, 9)}
+>>> print p['first_name']
+<input type="text" name="first_name" value="John" />
+>>> print p['last_name']
+<input type="text" name="last_name" value="Lennon" />
+>>> print p['birthday']
+<input type="text" name="birthday" value="1940-10-09" />
+>>> for boundfield in p:
+...     print boundfield
+<input type="text" name="first_name" value="John" />
+<input type="text" name="last_name" value="Lennon" />
+<input type="text" name="birthday" value="1940-10-09" />
+
+>>> p = Person({'last_name': u'Lennon'})
+>>> p.errors()
+{'first_name': [u'This field is required.'], 'birthday': [u'This field is required.']}
+>>> p.is_valid()
+False
+>>> p.errors().as_ul()
+u'<ul class="errorlist"><li>first_name<ul class="errorlist"><li>This field is required.</li></ul></li><li>birthday<ul class="errorlist"><li>This field is required.</li></ul></li></ul>'
+>>> print p.errors().as_text()
+* first_name
+  * This field is required.
+* birthday
+  * This field is required.
+>>> p.to_python()
+>>> repr(p.to_python())
+'None'
+>>> p['first_name'].errors
+[u'This field is required.']
+>>> p['first_name'].errors.as_ul()
+u'<ul class="errorlist"><li>This field is required.</li></ul>'
+>>> p['first_name'].errors.as_text()
+u'* This field is required.'
+
+>>> p = Person()
+>>> print p['first_name']
+<input type="text" name="first_name" />
+>>> print p['last_name']
+<input type="text" name="last_name" />
+>>> print p['birthday']
+<input type="text" name="birthday" />
+
+>>> class SignupForm(Form):
+...     email = EmailField()
+...     get_spam = BooleanField()
+>>> f = SignupForm()
+>>> print f['email']
+<input type="text" name="email" />
+>>> print f['get_spam']
+<input type="checkbox" name="get_spam" />
+
+>>> f = SignupForm({'email': 'test@example.com', 'get_spam': True})
+>>> print f['email']
+<input type="text" name="email" value="test@example.com" />
+>>> print f['get_spam']
+<input checked="checked" type="checkbox" name="get_spam" />
+
+Any Field can have a Widget class passed to its constructor:
+>>> class ContactForm(Form):
+...     subject = CharField()
+...     message = CharField(widget=Textarea)
+>>> f = ContactForm()
+>>> print f['subject']
+<input type="text" name="subject" />
+>>> print f['message']
+<textarea name="message"></textarea>
+
+as_textarea() and as_text() are shortcuts for changing the output widget type:
+>>> f['subject'].as_textarea()
+u'<textarea name="subject"></textarea>'
+>>> f['message'].as_text()
+u'<input type="text" name="message" />'
+
+The 'widget' parameter to a Field can also be an instance:
+>>> class ContactForm(Form):
+...     subject = CharField()
+...     message = CharField(widget=Textarea(attrs={'rows': 80, 'cols': 20}))
+>>> f = ContactForm()
+>>> print f['message']
+<textarea rows="80" cols="20" name="message"></textarea>
+
+Instance-level attrs are *not* carried over to as_textarea() and as_text():
+>>> f['message'].as_text()
+u'<input type="text" name="message" />'
+>>> f = ContactForm({'subject': 'Hello', 'message': 'I love you.'})
+>>> f['subject'].as_textarea()
+u'<textarea name="subject">Hello</textarea>'
+>>> f['message'].as_text()
+u'<input type="text" name="message" value="I love you." />'
+
+"""
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()