def _cursor(self, settings):
        set_tz = False
        if self.connection is None:
            set_tz = True
            if settings.DATABASE_NAME == '':
                from django.core.exceptions import ImproperlyConfigured
                raise ImproperlyConfigured("You need to specify DATABASE_NAME in your Django settings file.")
            conn_string = "dbname=%s" % settings.DATABASE_NAME
            if settings.DATABASE_USER:
                conn_string = "user=%s %s" % (settings.DATABASE_USER, conn_string)
            if settings.DATABASE_PASSWORD:
                conn_string += " password='%s'" % settings.DATABASE_PASSWORD
            if settings.DATABASE_HOST:
                conn_string += " host=%s" % settings.DATABASE_HOST
            if settings.DATABASE_PORT:
                conn_string += " port=%s" % settings.DATABASE_PORT
            self.connection = Database.connect(conn_string, **self.options)
            self.connection.set_isolation_level(1) # make transactions transparent to all cursors
        cursor = self.connection.cursor()
        if set_tz:
            cursor.execute("SET TIME ZONE %s", [settings.TIME_ZONE])
            if not hasattr(self, '_version'):
                self.__class__._version = get_version(cursor)
            if self._version < (8, 0):
                # No savepoint support for earlier version of PostgreSQL.
                self.features.uses_savepoints = False
        cursor.execute("SET client_encoding to 'UNICODE'")
        cursor = UnicodeCursorWrapper(cursor, 'utf-8')
        return cursor
dataset/ETHPy150Open dcramer/django-compositepks/django/db/backends/postgresql/base.py/DatabaseWrapper._cursor/original