In Python Code | !full!

# Wrong def append_to_list(value, lst=[]): # list persists across calls! lst.append(value) return lst

for item in items: print(item)

Always use context managers for resources. in python code

Define behavior cleanly with type hints (Python 3.5+): # Wrong def append_to_list(value, lst=[]): # list persists

@classmethod def total_accounts(cls) -> int: return cls._total_accounts # Wrong def append_to_list(value