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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 updateItem(self, itemParameters, clearEmptyFields=False, data=None, metadata=None, text=None, serviceUrl=None, multipart=False):
 """ updates an item's properties using the ItemParameter class. Inputs: itemParameters - property class to update clearEmptyFields - boolean, cleans up empty values data - updates the file property of the service like a .sd file metadata - this is an xml file that contains metadata information text - The text content for the item to be updated. serviceUrl - this is a service url endpoint. multipart - this is a boolean value that means the file will be broken up into smaller pieces and uploaded. """

        thumbnail = None
        largeThumbnail = None
        files = {}
        params = {
            "f": "json",

        }
        if clearEmptyFields:
            params["clearEmptyFields"] = clearEmptyFields
        if serviceUrl is not None:
            params['url'] = serviceUrl
        if text is not None:
            params['text'] = text
        if isinstance(itemParameters, ItemParameter) == False:
            raise AttributeError("itemParameters must be of type parameter.ItemParameter")
        keys_to_delete = ['id', 'owner', 'size', 'numComments',
                          'numRatings', 'avgRating', 'numViews' ,
                          'overwrite']
        dictItem = itemParameters.value
        for key in keys_to_delete:
            if key in dictItem:
                del dictItem[key]

        for key in dictItem:
            if key == "thumbnail":
                files['thumbnail'] = dictItem['thumbnail']
            elif key == "largeThumbnail":
                files['largeThumbnail'] = dictItem['largeThumbnail']
            elif key == "metadata":
                metadata = dictItem['metadata']
                if os.path.basename(metadata) != 'metadata.xml':
                    tempxmlfile = os.path.join(tempfile.gettempdir(), "metadata.xml")
                    if os.path.isfile(tempxmlfile) == True:
                        os.remove(tempxmlfile)
                    import shutil
                    shutil.copy(metadata, tempxmlfile)

                    metadata = tempxmlfile
                files['metadata'] = dictItem['metadata']
            else:
                params[key] = dictItem[key]
        if data is not None:
            files['file'] = data
        if metadata and os.path.isfile(metadata):
            files['metadata'] = metadata
        url = "%s/update" % self.root
        if multipart:
            itemID = self.id
            params['multipart'] = True
            params['fileName'] = os.path.basename(data)
            res = self._post(url=url,
                             param_dict=params,
                             securityHandler=self._securityHandler,
                             proxy_url=self._proxy_url,
                             proxy_port=self._proxy_port)
            itemPartJSON = self.addByPart(filePath=data)
            res = self.commit(wait=True, additionalParams=\
                              {'type' : self.type })

        else:
            res = self._post(url=url,
                 param_dict=params,
                 files=files,
                 securityHandler=self._securityHandler,
                 proxy_url=self._proxy_url,
                 proxy_port=self._proxy_port,
                 force_form_post=True)
        self.__init()
        return self