def fetchone(self):
self._check_executed()<EOL>r = self._fetch_row(<NUM_LIT:1>)<EOL>if not r:<EOL><INDENT>return None<EOL><DEDENT>self.rownumber = self.rownumber + <NUM_LIT:1><EOL>return r[<NUM_LIT:0>]<EOL>
Fetches a single row from the cursor.