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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 save(self, vs, filetype):
        'Copy rows to the system clipboard.'

        # use NTF to generate filename and delete file on context exit
        with tempfile.NamedTemporaryFile(suffix='.'+filetype) as temp:
            saveSheets(temp.name, vs)
            sync(1)
            p = subprocess.Popen(
                self.command,
                stdin=open(temp.name, 'r', encoding=options.encoding),
                stdout=subprocess.DEVNULL,
                close_fds=True)
            p.communicate()