def get_areas():
    areas = []
    for x in range(4):
        for y in range(4):
            area = x * y
            areas.append(area)
    return areas
建议下列代码最有效的改进方式:
One way to improve the efficiency of the code is to utilize list comprehension to reduce the number of lines of code and improve readability. The improved code would look like this:

def get_areas():
    areas = [x * y for x in range(4) for y in range(4)]
    return areas