How to sort list objects in Python similar struct in C

Question

I'm a newbie . I have a problem .

That problem is how to sort a list objects in Python similar struct in C

Example: I have code:

class struct():

    def __init__(self,first=0,second=0):
        self.f=first
        self.s=second

for i in range(1,n+1):
     a[i]=struct()
     a[i].f,a[i].s=map(int,input().split())


a.sort(key=???)
for i in range(1,n+1):
    print(a[i].f," ",a[i].s)

and the test :

I want to sort the list a [i] .f in ascending order and if there are more a [i] .f , I want to sort the a [i] .s in descending order.

Please tell me the solution. Thank u for reading

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– Some programmer dude, Commented Jan 21, 2020 at 11:21

Chris Johnson · Accepted Answer · 2020-01-21 11:25:39Z

1

See the functools library, total_ordering class. Apply that as a decorator to your class and define the logic for which of two objects sorts higher / lower.

answered Jan 21, 2020 at 11:25

Chris Johnson

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