Sort Function: <' not supported between instances of 'float' and 'tuple'

[quest]

Hello I have this list:

Output:
[((7.2, <__main__.bit object at 0x7f341d8b8700>), <__main__.port object at 0x7f344082cd00>), ((5.5, <__main__.bit object at 0x7f341d8b8790>), <__main__.port object at 0x7f34407aa190>)]

ANd I want to sort it with this code:

nextlist=[(next(ip),ip) for ip in ports]
        while len(nextlist)>0:
            nextlist.sort() 

But I have this error:

nextlist.sort()

TypeError: '<' not supported between instances of 'float' and 'tuple'

HOw to solve it