Author of the post/rule here. I'd be very curious to see this rule ported/translated to Python! While the gotcha's would probably be different, I suspect it would uncover real bugs. One interesting challenge with JavaScript is that its so ubiquitous that _everyone_ ends up needing to write it at some point. Even those for whom it is a second or third language. I suspect this makes its gotchas all the more common to encounter. Conversely, it makes the value of tools to guide around those gotchas that much more valuable.