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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def make_request(url, data, on_complete):
 """ Make AJAX request to `url` with given POST `data`. Call `on_complete` callback when complete. Args: url (str):
 URL. data (dict):
 Dictionary with POST data. on_complete (ref):
 Reference to function / method which will be called when the request is done. """

    req = ajax.ajax()
    req.bind('complete', on_complete)
    req.open('POST', url, True)
    req.set_header('content-type', 'application/x-www-form-urlencoded')
    req.send(data)