因为程序运行的时间不足 1 秒,所以不会显示,加上 sleep(1)(表示让程序暂停一秒)就能显示了
import time as t
class MyTimer():
def __init__(self):
self.unit = ["年","月","天","小时","分钟","秒"]
self.prompt = "未开始计时!"
self.lasted = []
self.begin = 0
self.end = 0
def __str__(self):
return self.prompt
__repr__ = __str__
def __add__(self, other):
prompt = "总共运行了"
result = []
for index in range(6):
result.append(self.lasted[index] + other.lasted[index])
if result[index]:
prompt += (str(result[index]) + self.unit[index])
return prompt
# 开始计时
def start(self):
self.begin = t.localtime()
self.prompt = "提示:请先调用stop()停止计时!"
print("计时开始...")
# 停止计时
def stop(self):
if not self.begin:
print("提示:请先调用start()进行计时!")
else:
self.end = t.localtime()
self._calc()
print("计时结束!")
# 内部方法,计算运行时间
def _calc(self):
self.lasted = []
self.prompt = "总共运行了"
for index in range(6):
self.lasted.append(self.end[index] - self.begin[index])
if self.lasted[index]:
self.prompt += (str(self.lasted[index]) + self.unit[index])
# 为下一轮计时初始化变量
self.begin = 0
self.end = 0
t1 = MyTimer()
t1.start()
t.sleep(1)
t1.stop()
print(t1)
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