I have dataframe in pandas with columns. I want list only the unique combinations .How can do it.
**Input**
data[['Month','Ratio']]
Month  Ratio
3      0.7169653 
3      0.7169653      
3      0.7169653
6      0.6789213
6      0.6789213
7      0.2345671
7      0.2345671
7      0.2345671
7      0.2345671
12     0.5623451
12     0.5623451
12     0.5623451
1      0.9808901
**Expected Output**
Month  Ratio
3      0.7169653 
6      0.6789213
7      0.2345671
12     0.5623451
1      0.9808901
How to do this in python