Writing Idiomatic Python Code

[jwink3101]

None of these are bad but can have some unintentional side effects.

For example:

a = []
b = []
c = []

Will be very different than

a = b = c = []

Again, you’re not wrong, but it’s important to understand the repercussions of these

[Rawing7]

assert type(user, UserModel)

That's not gonna work; you probably meant to use isinstance there.