在Python中获得毫秒数 [英] Getting milliseconds in Python

问题描述

我正在尝试记录一个操作需要多长时间，但似乎无法找到一个能让我记录时间戳的函数
毫秒，也许我在找错了地方？

解决方案

mjs7231写道：

我试图记录一个操作需要多长时间，但似乎无法找到一个允许我以毫秒记录时间戳的功能，也许我在找错了地方？ / blockquote>


我不知道你在哪里看 - 但时间模块有恕我直言的描述性

足够的名字 - 所以看那里，快乐露营。


-

问候，


Diez B. Roggisch

"将时间作为以秒为单位表示的浮点数返回，以UTC为单位，以纪元为单位。请注意，即使时间总是以浮点数的形式返回，但并非所有系统都提供的时间精度比1秒更好。
精度。虽然此函数通常返回

非递减值，但如果系统时钟已在两次调用之间设置，则它可以返回比前一次调用更低的值

。


这不好，我正在寻找毫秒，而不是秒......如上所述

以上。

>>>>> " mjs7231" == mjs7231< mj ***** @ gmail.com>写道：


mjs7231>这不好，我正在寻找毫秒，而不是
mjs7231>秒..如上所述。


好​​秒/ 1000.0 =毫秒 - 或者您是否担心浮动

点错误？


7>>>从datetime导入日期时间

8>>> dt = datetime.now（）

9>>> dt.microsecond

Out [9]：20222


另见timeit模块......

JDH

I am trying to record how long an operation takes, but can''t seem to
find a function that will allow me to record the timestamp in
milliseconds, maybe I am looking in the wrong place?

解决方案

mjs7231 wrote:

I am trying to record how long an operation takes, but can''t seem to
find a function that will allow me to record the timestamp in
milliseconds, maybe I am looking in the wrong place?

I have no idea where you look - but the time-module has IMHO a descriptive
enough name - so look there and be a happy camper.

--
Regards,

Diez B. Roggisch

"Return the time as a floating point number expressed in seconds since
the epoch, in UTC. Note that even though the time is always returned as
a floating point number, not all systems provide time with a better
precision than 1 second. While this function normally returns
non-decreasing values, it can return a lower value than a previous call
if the system clock has been set back between the two calls. "

This is no good, I am looking for milliseconds, not seconds.. as stated
above.

>>>>> "mjs7231" == mjs7231 <mj*****@gmail.com> writes:

mjs7231> This is no good, I am looking for milliseconds, not
mjs7231> seconds.. as stated above.

Well seconds/1000.0 = millseconds -- or are you worries about floating
point error?

7 >>> from datetime import datetime
8 >>> dt = datetime.now()
9 >>> dt.microsecond
Out[9]: 20222

Converting to milliseconds is left as an exercise for the reader...

See also the timeit module...
JDH

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