Provide APIs to help application developers test their Histogram-using code

I have an application that uses Histogram. I want to write some tests that assert that my application is putting values into the right buckets of that histogram.

To read values out of the Histogram it seems that need to either:

• look at the Histogram's private _buckets attribute, or
• call Histogram.collectand look at the resulting Metric objects which are documented as "intended only for internal use" and then look at its Samples which aren't documented at all.

Neither of these seems particularly satisfactory. It would be very helpful if client_python provided some way to read bucket counts and the total sum from a Histogram, using documented APIs clearly marked as intended for external use (perhaps only in test suites).

まず、Python クライアントの Histogram 実装を調査します。特に _buckets 属性と collect メソッド、およびそれが返す Metric オブジェクトと Samples オブジェクトを確認してください。バケットのカウントと合計値を読み取るための、文書化された外部 API を定義してテストし、アプリケーションのテストが private オブジェクトや内部専用オブジェクトを使わずに値をアサートできることを示すカバレッジを追加してください。