I have written that check previously - specifically for a missing comma in a list-like context. I will see if I can find the code for it.


On Mon, 24 Jul 2017, 12:01 Razzi Abuissa, <razzi@abuissa.net> wrote:
Hi PyCQA,

I've done a little searching but have not found a lint check for the following:

[
    'a',
    'b'
    'c'
]

evaluates to ['a', 'bc'] due to implicit string concatenation, but usually it's intended to be ['a', 'b', 'c']. If it is meant to be ['a', 'bc'] it's bad style.

Guido recommends popular lint tools add a rule for this here: https://groups.google.com/forum/#!msg/python-ideas/jP1YtlyJqxs/FacZu-WK_9AJ

If this check does not exist, I would be willing to create a flake8 plugin and add it to PyCQA.

Regards,

Razzi
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