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pythonpandasdataframeindexing

How to get the last N rows of a pandas DataFrame?

I have pandas dataframe df1:

    STK_ID  RPT_Date  TClose   sales  discount
0   000568  20060331    3.69   5.975       NaN
1   000568  20060630    9.14  10.143       NaN
2   000568  20060930    9.49  13.854       NaN
3   000568  20061231   15.84  19.262       NaN
4   000568  20070331   17.00   6.803       NaN
5   000568  20070630   26.31  12.940       NaN
6   000568  20070930   39.12  19.977       NaN
7   000568  20071231   45.94  29.269       NaN
8   000568  20080331   38.75  12.668       NaN
9   000568  20080630   30.09  21.102       NaN
10  000568  20080930   26.00  30.769       NaN

I wanted to select the last 3 rows and tried df1.ix[-3:], but it returns all the rows. Why? How to get the last 3 rows of df1? I'm using pandas 0.10.1.

Solution

  • Don't forget DataFrame.tail! e.g. df1.tail(10)