def delete_if_exists(self, **kwargs):
try:<EOL><INDENT>self.get(**kwargs).blocking_delete()<EOL>return True<EOL><DEDENT>except ObjectDoesNotExist:<EOL><INDENT>return False<EOL><DEDENT>
Deletes an object if it exists in database according to given query 
parameters and returns True otherwise does nothing and returns False.

Args:
    **kwargs: query parameters

Returns(bool): True or False