📄️ Closures in loops📄️ Shallow vs deep copies📄️ Mutable defaults📄️ dict.get()- missing vs `None`📄️ Exception handler order📄️ Float comparisons📄️ Avoid import *📄️ Identity vs equality📄️ Mutating while iterating📄️ Repeated nested lists📄️ sort() vs sorted()📄️ Truthiness and missing values