Method trace

tests/fix_pq.py:94–104

(self, conn)

class Tracer:
    def trace(self, conn):
        pgconn: pq.abc.PGconn

        if hasattr(conn, "exec_"):
            pgconn = conn
        elif hasattr(conn, "cursor"):
            pgconn = conn.pgconn
        else:
            raise Exception()

        return TraceLog(pgconn)


class TraceLog: