def _get_tuple(self, fields):
v1 = '<STR_LIT>'<EOL>v2 = '<STR_LIT>'<EOL>if len(fields) > <NUM_LIT:0>:<EOL><INDENT>v1 = fields[<NUM_LIT:0>]<EOL><DEDENT>if len(fields) > <NUM_LIT:1>:<EOL><INDENT>v2 = fields[<NUM_LIT:1>]<EOL><DEDENT>return v1, v2<EOL>
:param fields: a list which contains either 0,1,or 2 values
:return: a tuple with default values of '';