python datetime fromtimestamp产生valueerror年超出范围 [英] python datetime fromtimestamp yielding valueerror year out of range

问题描述

当尝试将浮点格式的时间戳（例如 1437506779950.0 ）转换为日期时间对象时，出现ValueError年份超出范围。

When attempting to convert a float formatted timestamp e.g 1437506779950.0 into a datetime object, I'm getting a ValueError "year is out of range".

我使用的这段代码在3个月前还没有运行。现在再来看看，奇怪的是现在抛出此错误，但代码库中的任何内容都没有更改，只有传递给它的数据，并且唯一更改的数据显然是时间戳。

This code that I used, was working not 3 months ago. Revisiting it now, strangely is now throwing this error yet nothing in the code base has changed, only the data that is being passed to it, and the only data that has changed there is obviously the timestamp.

>>> f = 1437506779950.0
>>> datetime.datetime.fromtimestamp(float(f))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: year is out of range

我不知道会发生什么变化

I can't understand what would have changed to make this break?

推荐答案

如此问题，它看起来像是单位转换问题。您必须将时间戳除以1000才能从毫秒转换为秒。

As noted in the answer for this question, this looks like a unit conversion issue. You have to divide your timestamp by 1000 to convert from milliseconds to seconds.

如果要保留毫秒精度，请除以1000.0。

If you want to preserve millisecond precision, instead divide by 1000.0.

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