Simple Moving Average function

sma.py

        def sma(items: list, window: int = 5) -> list:
            """Simple moving average for list. Window is the amount to average."""
            count = 0
            averages = []
            while count < len(items) - window + 1:
                values = items[count: count + window]
                avg = int(sum(values)/window)
                averages.append(avg)
                count += 1
            return averages