將 timedelta 轉換爲年？ - Convert timedelta to years?

問題：

I need to check if some number of years have been since some date.我需要檢查自某個日期以來是否已經過了幾年。 Currently I've got timedelta from datetime module and I don't know how to convert it to years.目前我從datetime模塊獲得了timedelta ，但我不知道如何將其轉換爲年份。

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解決方案：

參考一： https://en.stackoom.com/question/3DDZ
參考二： https://stackoom.com/question/3DDZ