[Python-ideas] suggestion about the sort() function of the list instance

Stephan Houben stephanh42 at gmail.com
Wed Mar 1 05:10:12 EST 2017


It's even in the Programming FAQ:

"In general in Python (and in all cases in the standard library) a method
that mutates an object will return None to help avoid getting the two types
of operations confused. So if you mistakenly write y.sort() thinking it
will give you a sorted copy of y, you’ll instead end up with None, which
will likely cause your program to generate an easily diagnosed error."

Stephan

2017-03-01 10:31 GMT+01:00 Paul Moore <p.f.moore at gmail.com>:

> On 1 March 2017 at 01:31, qhlonline <qhlonline at 163.com> wrote:
> > My code example is not proper,  Yes,  may be this is better:
> > list.sort().revers(
>
> We can already do this - reversed(sorted(lst))
>
> This is a long-established design decision in Python. It would need a
> *very* compelling use case to even think about changing it.
> Paul
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