Expression can be simplified on list

[Piet van Oostrum]

Daiyue Weng <daiyueweng at gmail.com> writes:

> Hi, I found that when I tried to make an equality test on empty like,
>
> if errors == []:
>
> PyCharm always warns me,
>
> Expression can be simplified.
>
> I am wondering what's wrong and how to fix this?
>
It is not wrong, but it can be simplified to just:

if errors:

This is quite usual in Python, but some people prefer the more elaborate form, or something like:

if len(errors) == 0:
-- 
Piet van Oostrum <piet-l at pietvanoostrum.com>
WWW: http://pietvanoostrum.com/
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