python——时间换算

利用datetime模块进行不同时间单位的换算

python代码

from datetime import timedelta
a = timedelta(days=2, hours=6)
b = timedelta(hours=4.5)
c = a + b
print(c.days)
print(c.seconds)
print(c.seconds / 3600)

表示特定的日期和时间

java代码

from datetime import datetime
a = datetime(2016, 8, 30)
print(a + timedelta(days=10))
b = datetime(2016, 9, 30)
d = b – a
print(d.days)
now = datetime.today()
print(now)
print(now + timedelta(minutes=10))

datetime模块可以正确处理闰年

java代码

a = datetime(2012, 3, 1)
b = datetime(2012, 2, 28)
print((a-b).days)
c = datetime(2013, 3, 1)
d = datetime(2013, 2, 28)
print((c-d).days)

处理更为复杂的日期问题,如处理时区,模糊时间范围,计算节日的日期等可以用dateutil模块

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