The statement isn't completely incorrect, but is slightly misleading and could be improved. See this Stack Overflow question, this answer in particular:

For those tasks I use most of the time block selection.

Put your cursor on the first # character, press Ctrl-q, and go down until the last commented line and press x, that will delete all the # characters vertically.

For commenting a block of text is almost the same, go to the first line you want to comment, press Ctrlq, then select until the last line, and press I#Esc, that will insert a # character on all selected lines.

@Kuyan but it doesn't toggle commenting a line. You can't move to a line press ^-v and have the line auto-commented. It is a visual block trigger though through which one of the things you can do is insert characters, which in python and ruby's case could be an octothorpe.

The statement is incorrect. ctrl-v is not a "comment/uncomment" toggle in vim. Regardless, this is a python guide, and there's really no need to include this even if it were accurate.

@mkomitee in case my comment wasn't explicit enough, I'm +1 for this PR

@mkomitee @sigmavirus24 You're right - in that case, this pull request has my 👍.

Excellent.

Off-topic: @sigmavirus24, do you ever have to sleep like the rest of us?

@mkomitee what is this sleep you speak of?

This thread was a fun read. Thumbs up.