故障排除“ValueError:时间数据...与格式不匹配”使用 datetime.strptime 时

发布于 2024-08-25 09:42:03 字数 358 浏览 6 评论 0原文

我的输入字符串是 '16-MAR-2010 03:37:04' 我想将其存储为日期时间。

我正在尝试使用:

db_inst.HB_Create_Ship_Date = datetime.strptime(fields[7]," %d-%b-%Y %H:%M:%S ") 
fields[7] = '16-MAR-2010 03:37:04' 

我收到错误:

::ValueError: time data '16-MAR-2010 03:37:04' does not match format ' %d-%b-%Y %H:%M:%S ' 

My input string is '16-MAR-2010 03:37:04' and i want to store it as datetime.

I am trying to use:

db_inst.HB_Create_Ship_Date = datetime.strptime(fields[7]," %d-%b-%Y %H:%M:%S ") 
fields[7] = '16-MAR-2010 03:37:04' 

I am getting an error:

::ValueError: time data '16-MAR-2010 03:37:04' does not match format ' %d-%b-%Y %H:%M:%S ' 

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评论(4

执笏见 2024-09-01 09:42:03

编辑:
正如 John 提到的,让自己更轻松并删除前导和尾随空格。

另一个想法:
您当前的区域设置可能未将“MAR”指定为月份缩写。

这段代码的输出是什么?:

import locale
locale.getdefaultlocale()

我在 Linux 机器(Ubuntu 9.10,Python 2.6.4)上测试了你的代码并得到了 ValueError。
我删除了空格,更改为非英语语言环境(捷克语),并得到了 ValueError。

学术笔记:
奇怪的是,您的代码可以在 Windows XP Python 2.5.5 上运行,并带有多余的空格:

>>> from datetime import datetime
>>> dt = '16-MAR-2010 03:37:04'
>>> datetime.strptime(dt, " %d-%b-%Y %H:%M:%S ")
datetime.datetime(2010, 3, 16, 3, 37, 4)

Edit:
As John mentions, make it easier on yourself and remove the leading and trailing spaces.

Another thought:
Your current locale may not specify "MAR" as a month abbreviation.

What does the output of this code give?:

import locale
locale.getdefaultlocale()

I tested your code on a Linux machine (Ubuntu 9.10, Python 2.6.4) and got the ValueError.
I removed the spaces, changed to non-English locale (Czech), and got the ValueError.

Academic note:
Oddly your code works on Windows XP Python 2.5.5 with the extraneous spaces:

>>> from datetime import datetime
>>> dt = '16-MAR-2010 03:37:04'
>>> datetime.strptime(dt, " %d-%b-%Y %H:%M:%S ")
datetime.datetime(2010, 3, 16, 3, 37, 4)
蘑菇王子 2024-09-01 09:42:03

您的格式字符串具有前导空格和尾随空格,但您的输入字符串没有。删除起始引号后面和结束引号之前的空格。

Your format string has a leading space and a trailing space, but your input string does not. Remove the space after the starting quotation mark and before the ending quotation mark.

揪着可爱 2024-09-01 09:42:03

去掉格式前后的空格。我认为 strptime 的记录会根据为您的机器编写 C 运行时的人的突发奇想而变化。不过看来我错了。这意味着 Python 中存在错误。

Windows 上的 Python 2.6.4 不喜欢前导尾随空格;见下文。

*x 位用户,您发现了什么?

同时,使用最小的共同点——去掉空格。正如 Adam 提到的,您可能还遇到区域设置问题。

有空格:

>>> datetime.datetime.strptime('16-MAR-2010 03:37:04'," %d-%b-%Y %H:%M:%S ")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\python26\lib\_strptime.py", line 325, in _strptime
    (data_string, format))
ValueError: time data '16-MAR-2010 03:37:04' does not match format ' %d-%b-%Y %H
:%M:%S '

无空格:

>>> datetime.datetime.strptime('16-MAR-2010 03:37:04',"%d-%b-%Y %H:%M:%S")
datetime.datetime(2010, 3, 16, 3, 37, 4)
>>>

Lose the spaces at the front and back of your format. I thought that strptime was documented to vary depending on the whims of whoever wrote the C runtime for your box. However it seems I'm wrong. Which would mean that there's a bug in Python.

Python 2.6.4 on Windows doesn't like leading trailing spaces; see below.

*x users, what do you find?

In the meantime, use the lowest common denominator -- lose the spaces. You may also have a locale problem, as Adam mentioned.

With spaces:

>>> datetime.datetime.strptime('16-MAR-2010 03:37:04'," %d-%b-%Y %H:%M:%S ")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\python26\lib\_strptime.py", line 325, in _strptime
    (data_string, format))
ValueError: time data '16-MAR-2010 03:37:04' does not match format ' %d-%b-%Y %H
:%M:%S '

Without spaces:

>>> datetime.datetime.strptime('16-MAR-2010 03:37:04',"%d-%b-%Y %H:%M:%S")
datetime.datetime(2010, 3, 16, 3, 37, 4)
>>>
内心旳酸楚 2024-09-01 09:42:03

试试这个:

db_inst.HB_Create_Ship_Date = datetime.strptime(fields[7],"%d-%b-%Y %H:%M:%S")

此外,查看此处作为 Python 中日期时间格式的参考。

Try this:

db_inst.HB_Create_Ship_Date = datetime.strptime(fields[7],"%d-%b-%Y %H:%M:%S")

Also, have a look here as a reference for DateTime formatting in Python.

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