Mailing List Archive

On 5/20/23 13:53, Chris Green wrote:
> I'm converting a bash script to python as it has become rather clumsy
> in bash.
>
> However I have hit a problem with converting dates, the bash script
> has:-
>
> dat=$(date --date "$1" +"%Y/%m/%d")
>
> and this will accept almost anything reasonably sensible that can be
> interpreted as a date, in particular it accepts things like "tomorrow",
> "yesterday" and "next thursday".
>
> Is there anything similar in Python or would I be better off simply
> using os.system() to run date from the python program?
>

in the standard library, datetime

as an addon module, dateutil (install as python-dateutil)

Don't know if either are exactly what you want, but do take a look.

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On Mon, May 22, 2023 at 12:41?PM Mats Wichmann <mats@wichmann.us> wrote:

> On 5/20/23 13:53, Chris Green wrote:
> > I'm converting a bash script to python as it has become rather clumsy
> > in bash.
> >
> > However I have hit a problem with converting dates, the bash script
> > has:-
> >
> > dat=$(date --date "$1" +"%Y/%m/%d")
> >
> > and this will accept almost anything reasonably sensible that can be
> > interpreted as a date, in particular it accepts things like "tomorrow",
> > "yesterday" and "next thursday".
> >
> > Is there anything similar in Python or would I be better off simply
> > using os.system() to run date from the python program?
> >
>
> in the standard library, datetime
>
> as an addon module, dateutil (install as python-dateutil)
>
> Don't know if either are exactly what you want, but do take a look.
>
> --
> https://mail.python.org/mailman/listinfo/python-list


In particular,check out dateutil.parser.
parser — dateutil 2.8.2 documentation
<https://dateutil.readthedocs.io/en/stable/parser.html>

parser
<https://dateutil.readthedocs.io/en/stable/parser.html#module-dateutil.parser>

This module offers a generic date/time string parser which is able to parse
most known formats to represent a date and/or time.

This module attempts to be forgiving with regards to unlikely input
formats, returning a datetime object even for dates which are ambiguous. If
an element of a date/time stamp is omitted, the following rules are applied:
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On 21/05/2023 5:53 am, Chris Green wrote:
> I'm converting a bash script to python as it has become rather clumsy
> in bash.

What is the use case?

> However I have hit a problem with converting dates, the bash script
> has:-
>
> dat=$(date --date "$1" +"%Y/%m/%d")
>
> and this will accept almost anything reasonably sensible that can be
> interpreted as a date, in particular it accepts things like "tomorrow",
> "yesterday" and "next thursday".
>
> Is there anything similar in Python or would I be better off simply
> using os.system() to run date from the python program?
>


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Mike Dewhirst <miked@dewhirst.com.au> wrote:
> [-- multipart/mixed, encoding 7bit, 22 lines --]
>
> [-- text/plain, encoding base64, charset: UTF-8, 16 lines --]
>
> On 21/05/2023 5:53 am, Chris Green wrote:
> > I'm converting a bash script to python as it has become rather clumsy
> > in bash.
>
> What is the use case?
>
A script I use to create diary entries, so it's very handy to be able
to give the date as 'yesterday' or 'friday'.

--
Chris Green
·
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On Tue, 23 May 2023, 17:25 Chris Green, <cl@isbd.net> wrote:

> Mike Dewhirst <miked@dewhirst.com.au> wrote:
> > [-- multipart/mixed, encoding 7bit, 22 lines --]
> >
> > [-- text/plain, encoding base64, charset: UTF-8, 16 lines --]
> >
> > On 21/05/2023 5:53 am, Chris Green wrote:
> > > I'm converting a bash script to python as it has become rather clumsy
> > > in bash.
> >
> > What is the use case?
> >
> A script I use to create diary entries, so it's very handy to be able
> to give the date as 'yesterday' or 'friday'.
>
> --
> Chris Green
> ·
> --
> https://mail.python.org/mailman/listinfo/python-list



Hi, you may find dateparser useful:
https://dateparser.readthedocs.io/en/latest/
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On 23/05/2023 7:16 pm, Chris Green wrote:
> Mike Dewhirst<miked@dewhirst.com.au> wrote:
>> [-- multipart/mixed, encoding 7bit, 22 lines --]
>>
>> [-- text/plain, encoding base64, charset: UTF-8, 16 lines --]
>>
>> On 21/05/2023 5:53 am, Chris Green wrote:
>>> I'm converting a bash script to python as it has become rather clumsy
>>> in bash.
>> What is the use case?
>>
> A script I use to create diary entries, so it's very handy to be able
> to give the date as 'yesterday' or 'friday'.

OK - I thought maybe baklabel might suit, but that delivers a day-name
(backup filename prefix) for today or a given date

>


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On 24/05/2023 6:00 pm, Mike Dewhirst wrote:
> On 23/05/2023 7:16 pm, Chris Green wrote:
>> Mike Dewhirst<miked@dewhirst.com.au> wrote:
>>> [-- multipart/mixed, encoding 7bit, 22 lines --]
>>>
>>> [-- text/plain, encoding base64, charset: UTF-8, 16 lines --]
>>>
>>> On 21/05/2023 5:53 am, Chris Green wrote:
>>>> I'm converting a bash script to python as it has become rather clumsy
>>>> in bash.
>>> What is the use case?
>>>
>> A script I use to create diary entries, so it's very handy to be able
>> to give the date as 'yesterday' or 'friday'.
>
> OK - I thought maybe baklabel might suit, but that delivers a day-name
> (backup filename prefix) for today or a given date

I have just refreshed baklabel on PyPI and upped it from my local svn
server to github [1]

The changes include resolving ambiguous dates across locales eg USA vs
Australia 5/6/2023 being detected as May in USA and June in Australia on
the assumption that the user knows what is required.

[1] https://github.com/mdewhirst/baklabel

>
>
>
> --
> Signed email is an absolute defence against phishing. This email has
> been signed with my private key. If you import my public key you can
> automatically decrypt my signature and be sure it came from me. Your
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--
Signed email is an absolute defence against phishing. This email has
been signed with my private key. If you import my public key you can
automatically decrypt my signature and be sure it came from me. Your
email software can handle signing.