Sort on basis of (name,age,score)

[jefsummers]

Your problem is where you have the quotes in the string -

inlist = [('Tom',19,80),('John',20,90),('Jony',17,91),('Jony',17,93),('Json',21,85)]
print(sorted(inlist))

Output:
[('John', 20, 90), ('Jony', 17, 91), ('Jony', 17, 93), ('Json', 21, 85), ('Tom', 19, 80)]