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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 reassignItem(self, targetUsername, targetFoldername):
 """ The Reassign Item operation allows the administrator of an organization to reassign a member's item to another member of the organization. Inputs: targetUsername - The target username of the new owner of the item targetFoldername - The destination folder for the item. If the item is to be moved to the root folder, specify the value as "/" (forward slash). If the target folder doesn't exist, it will be created automatically. """

        params = {
            "f" : "json",
            "targetUsername" : targetUsername,
            "targetFoldername" : targetFoldername
        }
        url = "%s/reassign" % self.root
        return self._post(
            url = url,
            param_dict=params,
            securityHandler=self._securityHandler,
            proxy_url=self._proxy_url,
            proxy_port=self._proxy_port)