How to analyze all duplicate entries in this Pandas DataFrame?

Question

I\'d like to be able to compute descriptive statistics on data in a Pandas DataFrame, but I only care about duplicated entries. For example, let\'s say I have the DataFrame

Answer 1

To get a list of all the duplicated entries with Pandas version 0.17, you can simply set 'keep = False' in the duplicated function.

frame[frame.duplicated(['key1','key2'],keep=False)]

    key1  key2  data
0     1     2     5
1     2     2     6
3     1     2     6
4     2     2     1
6     2     2     2
7     2     2     8