Method push

catboost/python-package/catboost/core.py:144–169

(self, log_cout=None, log_cerr=None)

        )

    def push(self, log_cout=None, log_cerr=None):
        with self._lock:
            if not self._stack:
                self._owning_thread_id = threading.current_thread().ident
            elif self._owning_thread_id != threading.current_thread().ident:
                if (log_cout is not None) or (log_cerr is not None):
                    raise CatBoostError(
                        'CatBoost custom loggers have been already set in another thread. '
                        + ' Setting custom loggers from different threads is not currently supported'
                    )
                return

            def init_log(log, default, index_in_stack):
                if log is None:
                    if not self._stack:
                        return default
                    else:
                        return self._stack[-1][index_in_stack]
                return _CustomLoggersStack._get_stream_like_object(log)

            cout = init_log(log_cout, sys.stdout, 0)
            cerr = init_log(log_cerr, sys.stderr, 1)

            _reset_logger()
            _set_logger(cout, cerr)
            self._stack.append((cout, cerr))

    def pop(self):
        with self._lock: