def load_tasks(self, status, project=None, fields=None):
        if project and project is not self.projects:
            return
        where = "status = %d" % status

        if project:
            projects = [project, ]
        else:
            projects = self.projects

        for project in projects:
            tablename = self._tablename(project)
            for each in self._select2dic(tablename, what=fields, where=where):
                yield self._parse(each)
dataset/ETHPy150Open binux/pyspider/pyspider/database/sqlite/taskdb.py/TaskDB.load_tasks/operator `not in` -> `is not`