How to map values using 3 columns?

@ASHISH_17 wrote:

Using pivot table, I am only able to find out Male who were married and irrespective of whether loan approved or not.
I want to find out Male who were married and were given Loan Status as 'Yes'.

Snippet in Python -

df.pivot_table(index=['Credit_History'],values='Loan_Status',aggfunc=lambda x:x.map({'Y':1,'N':0}).mean())

I want to find using this code but 3 columns instead of 2.

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