Python pls

Create a recursive function def set_tup(tup, key, val):

This function returns a tuple and adds a new tuple (key,value) in tup, or if a tuple already exist edit the tuple's value

For example

def set_tup(tup,key,val):

#THIS FUNCTION SHOULD BE RECURSIVE FUNCTION

#NO FOR LOOP ALLOWED

output

a = (('aaron',30),('bishop',40),('chess',50),('knight':60))

print(set_tup(a,'king',40))

output = (('aaron',30),('bishop',40),('chess',50),('knight':60),('king',40))

print(set_tup(a,'knight',40))

output = (('aaron',30),('bishop',40),('chess',50),('knight':40))