Why say x = x in Python?
equals, identity, python
Solution
There is no point to that assignment. It's probably just left over and should be removed. The next function is nearly identical, and doesn't have it.
Problem
In this file, in the function `cross_from_below(x, threshold)`, there is a line that says `threshold = threshold`. What's the point of this line? Does this do something differently than if this command weren't there?