Sorting by numbers and string
Question:
Say I have a list
['1','2','20', '5', 'undefined', '4']
How do is sort by numbers and put undefined the last? To like this?
['1','2','4', '5', '20', 'undefined']
dirnames.sort(key=int)
This only works without ‘undefined’.
Answers:
dirnames.sort(key=lambda s: [1] if s == 'undefined' else [0, int(s)])
or
dirnames.sort(key=lambda s: float('inf') if s == 'undefined' else int(s))
Say I have a list
['1','2','20', '5', 'undefined', '4']
How do is sort by numbers and put undefined the last? To like this?
['1','2','4', '5', '20', 'undefined']
dirnames.sort(key=int)
This only works without ‘undefined’.
dirnames.sort(key=lambda s: [1] if s == 'undefined' else [0, int(s)])
or
dirnames.sort(key=lambda s: float('inf') if s == 'undefined' else int(s))