March 2022
Intermediate to advanced
522 pages
13h 52m
Chinese
Content preview from Python语言及其应用（第2版）
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216
｜
第
13
章
索引 名称 含义 取值
4
tm_min
分钟
0
~
59
5
tm_sec
秒
0
~
61
3
6
tm_wday
周内某天
0
（周一）
~
6
（周日）
7
tm_yday
年内某天
1
~
366
8
tm_isdst
夏令时？
0
=
否，
1
=
是，
–1
=
未知
如果不想输入所有这些
tm_...
名称，则
struct_time
也可以像具名元组那样（参见
10.11
节），所以你也可以使用上表中的索引：
>>> import time
>>> now = time.localtime()
>>> now
time.struct_time(tm_year=2019, tm_mon=6, tm_mday=23, tm_hour=12,
tm_min=12, tm_sec=24, tm_wday=6, tm_yday=174, tm_isdst=1)
>>> now[0]
2019
print(list(now[x] for x in range(9)))
[2019, 6, 23, 12, 12, 24, 6, 174, 1]
mktime()
会执行相反的操作，将
struct_time
对象转换为纪元秒：
>>> tm = time.localtime(now)
>>> time.mktime(tm)
1554512132.0
这与之前的
now()
输出的纪元值不完全一样，原因在于
struct_time
对象只保留到了秒。
一些建议：尽可能使用
UTC
代替时区。
UTC
是绝对时间，与时区无关。如
果你有服务器，就将其时间设置为
UTC
，不要使用当地时间。 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.