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+--- Thread: sorting list (/thread-24154.html)
sorting list - arian29 - Feb-02-2020
Why does print(listA.sort()) return None ? But if I sort first and then print(listA), returns the sorted list items.
listA=[1,2,3,9,8,7,6] print(listA[1]) print(listA.sort())
RE: sorting list - ibreeden - Feb-02-2020
Yes you are right. One might expect a sorted list is returned, but look at the definition of list.sort. It says:
Quote:This method sorts the list in place. Apparently this means the list is sorted by this method. But it returns nothing.
>>> listA=[1,2,3,9,8,7,6] >>> print(listA.sort()) None >>> print(listA) [1, 2, 3, 6, 7, 8, 9]
RE: sorting list - ndc85430 - Feb-02-2020
That's what "in place" means - the original list is mutated, so there's nothing to return.
sorted on the other hand will return a new, sorted list.