GINI Index Combinations

[sushantnair]

In the lines 177-202 of the code, the valid combinations of different values of a column are generated. For example, the column Income has three values - High, Mid and Low. So the following are the valid combinations:

(high, mid), low
(high, low), mid
(mid, low), high
Out of these combinations, the one which has the lowest calculated value of GINI Index is chosen as the correct partition.
The problem with the code is again a localization issue - it works for columns with exactly three variables. It cannot generate all possible valid combinations for columns with four or more variable. So I raise this issue to welcome your contribution to fix this bug. Thank you for helping make the code versatile and relevant for any and all dataset!