点击上方“Deephub Imba”,关注公众号,好文章不错过 !Pandas 代码写得越多，越容易陷入一种惯性：用 apply() 逐行处理，用循环拼接结果，用 groupby 加 merge ...

When it comes to working with data in a tabular form, most people reach for a spreadsheet. That’s not a bad choice: Microsoft Excel and similar programs are familiar and loaded with functionality for ...