如何应用 DRY 规则

Question

有没有办法将以下内容简化为两行代码，而不是四行代码？

# convert to minutes (int)
if isinstance(r1, datetime.time):
    r1 = r1.minute + (r1.hour * 60)
if isinstance(r2, datetime.time):
    r2 = r2.minute + (r2.hour * 60)

Answer 1

当然：

def accumulateMinutesIfDateTime(r):
    if not isinstance(r, datetime.time):
        return r
    return r.minute + r.hour * 60
# ...
r1 = accumulateMinutesIfDateTime(r1)
r2 = accumulateMinutesIfDateTime(r2)

Answer 2

func = lambda r: r.minute + (r.hour * 60) if isinstance(r, datetime.time) else r
r1, r2 = func(r1), func(r2)

Answer 3

你可以让它更短，但可能不太容易理解：

r1, r2 = [r.minute + (r.hour * 60) if isinstance(r, datetime.time) else r for r in (r1, r2)]