gistfile1.txt

class USPhoneNumber(FancyValidator):

    """
    Validates, and converts to ###-###-####, optionally with extension
    (as ext.##...).  Only support US phone numbers.  See
    InternationalPhoneNumber for support for that kind of phone number.

    ::

        >>> p = USPhoneNumber()
        >>> p.to_python('333-3333')
        Traceback (most recent call last):
            ...
        Invalid: Please enter a number, with area code, in the form ###-###-####, optionally with "ext.####"
        >>> p.to_python('555-555-5555')
        '555-555-5555'
        >>> p.to_python('1-393-555-3939')
        '1-393-555-3939'
        >>> p.to_python('321.555.4949')
        '321.555.4949'
        >>> p.to_python('3335550000')
        '3335550000'
    """
    # for emacs: "

    _phoneRE = re.compile(r'^\s*(?:1-)?(\d\d\d)[\- \.]?(\d\d\d)[\- \.]?(\d\d\d\d)(?:\s*ext\.?\s*(\d+))?\s*$', re.I)

    messages = {
        'phoneFormat': _('Please enter a number, with area code, in the form ###-###-####, optionally with "ext.####"'),
        }

    def _to_python(self, value, state):
        self.assert_string(value, state)
        match = self._phoneRE.search(value)
        if not match:
            raise Invalid(
                self.message('phoneFormat', state),
                value, state)
        return value

    def _from_python(self, value, state):
        self.assert_string(value, state)
        match = self._phoneRE.search(value)
        if not match:
            raise Invalid(self.message('phoneFormat', state),
                          value, state)
        result = '%s-%s-%s' % (match.group(1), match.group(2), match.group(3))
        if match.group(4):
            result = result + " ext.%s" % match.group(4)
        return result