Lists are ordered, mutable, and can hold mixed types, though homogeneous lists are more common in practice.
python
txs = ["mint", "transfer", "burn"]
txs.append("swap")
txs[0] = "deploy"
txs.pop() # removes and returns last item
len(txs)List comprehensions build new lists concisely:
python squares = [n * n for n in range(5)] evens = [n for n in range(10) if n % 2 == 0]
Slicing (`txs[1:3]`) returns a new list, and negative indices count from the end (`txs[-1]` is the last element).