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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 get_admin_detail(self, req):
 """Returns the dict for the user specified as the admin in the request with the addition of an `account` key set to the admin user's account. :param req: The swob request to retrieve X-Auth-Admin-User and X-Auth-Admin-Key from. :returns: The dict for the admin user with the addition of the `account` key. """

        if ':' not in req.headers.get('x-auth-admin-user', ''):
            return None
        admin_account, admin_user = \
            req.headers.get('x-auth-admin-user').split(':', 1)
        user_json = self.get_user_detail(req, admin_account, admin_user)
        if user_json is None:
            return None
        admin_detail = json.loads(user_json)
        admin_detail['account'] = admin_account
        return admin_detail