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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(self, remote, local=None, keep_dir_structure=False):
 """ Download a remote file on the fto sever to a local directory. :param remote: File path of remote source file :param local: Directory of local destination directory :param keep_dir_structure: If True, replicates the remote files folder structure """

        if local and os.path.isdir(local):
            os.chdir(local)

        elif keep_dir_structure:
            # Replicate the remote files folder structure
            for directory in remote.split(os.sep)[:-1]:
                if not os.path.isdir(directory):
                    os.mkdir(directory)
                os.chdir(directory)

        # Change to the correct directory if remote is a path not just a name
        if os.sep in remote:
            directory, file_name = remote.rsplit(os.sep, 1)
            self.chdir(directory)
        else:
            file_name = remote

        # Download the file and get response
        response = self._retrieve_binary(file_name)

        # Rename downloaded files if local is a file_name string
        if local and isinstance(local, str):
            os.rename(file_name, local)
        return response