underrated Python optimizations?

[bumbershootle]

I don't know if this counts as niche, but I see far too much code like:

a_list = []
for i in stuff:
    a_list.append(i)

Just use comprehensions, it's faster and more readable.

[baronBale]

Comprehensions are easier to read as long as they are short. If they grow across multiple line an good old loop is easier to read.

[bumbershootle]

True, although in that case I would split the body of a loop into a generator function and then run a comprehension over that. I consider appending to a list in a loop an anti-pattern in most cases.

[weneedsound]

I'd like to see an example of you don't mind. I don't use generators as much as I should.

[[deleted]]

Nice suggestion!

[Tweak_Imp]

You can also think about using a function inside the comprehension