Re: [Python-Dev] python 3 niggle: None < 1 raises TypeError

[Serhiy Storchaka]

18.02.14 10:10, Paul Moore написав(ла):

Or alternatively, a "default on None" function - Oracle SQL calls this
nvl, so I will too:

def nvl(x, dflt):
     return dflt if x is None else x

results = sorted(invoices, key=lambda x: nvl(x.duedate, datetime(MINYEAR,1,1))

Or, as was proposed above:

results = sorted(invoices,
                 key=lambda x: (x.duedate is not None, x.duedate))


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