def exists(self, server):
try:<EOL><INDENT>server.get(<EOL>'<STR_LIT>',<EOL>replacements={<EOL>'<STR_LIT>': self.__challenge__.slug,<EOL>'<STR_LIT>': self.identifier})<EOL><DEDENT>except Exception:<EOL><INDENT>return False<EOL><DEDENT>return True<EOL>
Check if a task exists on the server