Python Built-In Function sorted(): Difference between revisions
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=Comparing Elements= | =Comparing Elements= | ||
==Key Function== | |||
{{Externa|https://docs.python.org/3/howto/sorting.html#key-functions}} | |||
Both <code>sorted()</code> and <code>sort()</code> accept a <code>key</code> argument which takes a function. The function is then invoked on each iterable to be sorted, and it is supposed to return a key to be used when sorting. | |||
<syntaxhighlight lang='py'> | |||
a = [Something("x"), Something("m"), Something("a")] | |||
a.sort(key=lambda element: element._value) | |||
for e in a: | |||
print(e) | |||
</syntaxhighlight> | |||
will display: | |||
<syntaxhighlight lang='text'> | |||
a | |||
m | |||
x | |||
</syntaxhighlight> | |||
Revision as of 01:08, 11 February 2023
External
Internal
Overview
Sorted() sorts any sequence (list, tuple) and always returns a list with the elements in a sorted manner, without modifying the original sequence.
Also see:
Comparing Elements
Key Function
Both sorted() and sort() accept a key argument which takes a function. The function is then invoked on each iterable to be sorted, and it is supposed to return a key to be used when sorting.
a = [Something("x"), Something("m"), Something("a")]
a.sort(key=lambda element: element._value)
for e in a:
print(e)
will display:
a
m
x