我如何在 python 中切片系列？

Question

How do i slice a series to retrieve the last 3 characters?

The series look like this:

1       WHITNEY ROU
2         ABBY  WAM
3         YAEL  AVE 

I tried data["Names"][:-3] to get ROU , WAM and AVE but failed to do so.

Answer 1

This will create a series with the last 3 letters of the Names column of your data dataframe.

last_three = data.Names.apply(lambda x: x[-3:])

Answer 2

You were almost there. You only missed to call .str on your series.

>>> new_series = data["Names"].str[-3:]
>>> print(new_series)
0    ROU
1    WAM
2    AVE