On 05/06/2015 21:16, Stephen Nelson-Smith wrote:
As part of my league secretary program (to which thread I shall reply again
shortly), I need to sort a list of lists. I've worked out that I can use
sorted() and operator.itemgetter to sort by a value at a known position in
each list. Is it possible to do this at a secondary level? So if the
items are the same, we use the secondary key?
Current function:
def sort_table(table, col=0):
... return sorted(table, key=operator.itemgetter(col), reverse=True)
...
sort_table(results, 6)
[['spip', 2, 2, 0, 10, 0, 4], ['hpip', 2, 0, 2, 2, 8, 0]]
S.
Asked myself the very same thing earlier today so had the answer at my
fingertips, taken from https://docs.python.org/3/howto/sorting.html
<quote>
The operator module functions allow multiple levels of sorting. For
example, to sort by grade then by age:
>>>
>>> sorted(student_tuples, key=itemgetter(1,2))
[('john', 'A', 15), ('dave', 'B', 10), ('jane', 'B', 12)]
</quote>
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
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