har...@moonshots.co.in wrote:
> sort = sorted(results, key=lambda res:itemgetter('date'))
> print(sort)
>
>
> I have tried the above code peter but it was showing error like ....
> TypeError: '<' not supported between instances of 'operator.itemgetter'
> and 'operator.itemgetter'
lambda res: itemgetter('date')
is short for
def keyfunc(res):
return itemgetter('date')
i. e. it indeed returns the itemgetter instance. But you want to return
res["date"]. For that you can either use a custom function or the
itemgetter, but not both.
(1) With regular function:
def keyfunc(res):
return res["date"]
sorted_results = sorted(results, key=keyfunc)
(1a) With lambda:
keyfunc = lambda res: res["date"]
sorted_results = sorted(results, key=keyfunc)
(2) With itemgetter:
keyfunc = itemgetter("date")
sorted_results = sorted(results, key=keyfunc)
Variants 1a and 2 can also be written as one-liners.
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