def radio(optionText='', optionNumber=1, htmlId=False, inlineHelpText=False,
    blockHelpText=False, disabled=False, checked=False):
    """
    *Generate a radio - TBS style*

    **Key Arguments:**
        - ``optionText`` -- the text associated with this checkbox
        - ``optionNumber`` -- the order in the option list
        - ``htmlId`` -- the html id of the element
        - ``inlineHelpText`` -- inline and block level support for help text that appears around form controls
        - ``blockHelpText`` -- a longer block of help text that breaks onto a new line and may extend beyond one line
        - ``disabled`` -- add the disabled attribute on an input to prevent user input
        - ``checked`` -- is the radio button checked by default

    **Return:**
        - ``radio`` -- the radio
    """
    if inlineHelpText:
        inlineHelpText = (
            '<span class="help-inline">%(inlineHelpText)s</span>' % locals())
    else:
        inlineHelpText = ''
    if blockHelpText:
        blockHelpText = (
            '<span class="help-block">%(blockHelpText)s</span>' % locals())
    else:
        blockHelpText = ''
    if disabled:
        disabled = 'disabled'
        disabledId = 'disabledId'
    else:
        disabled = ''
        disabledId = ''
    if checked is False:
        checked = ''
    else:
        checked = 'checked'
    if not htmlId:
        htmlId = ''
    radio = (
        """
        <label class="radio">
          <input type="radio" name="%(htmlId)s" id="%(htmlId)s %(disabledId)s %(htmlId)s" value="%(optionText)s" %(checked)s %(disabled)s>
            %(optionText)s
        </label>%(inlineHelpText)s%(inlineHelpText)s"""
         % locals())
    return radio
