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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 to_csv(self, filepath: str, index: bool=False, **kwargs):
 """Write the main dataframe to a csv file :param filepath: path of the file to save :type filepath: str :param index: [description], defaults to False :param index: bool, optional :param \*args: arguments to pass to ``pd.to_csv`` :example: ``ds.to_csv_("myfile.csv", header=false)`` """

        try:
            self.start("Saving data to "+filepath + " ...")
            if self.datapath is not None:
                if filepath.startswith("/") is False and \
                        filepath.startswith(".") is False:
                    filepath = self.datapath + "/" + filepath
            self.df.to_csv(filepath, encoding='utf-8', index=index, **kwargs)
            self.end("Data exported to", filepath)
        except Exception as e:
            self.err(e, "Can not convert data to csv")