Hi Guys

I am back with another thing that's puzzling me.

I am creating contingency tables but then I want to filter out certain
columns and also find if any entry in the table is 0.

Example:
        gts
labels  A1  B2  G3
     1    21 127 120
     2    23 112  0

Here I want to remove B2 column from this table and also if any entry is 0
in this case G3 second row.

Missing out on how to do this in an efficient manner as I have to do this
millions of times for my data.

Thanks!
-Abhi

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