Re: Checking for valid date input and convert appropriately

Date	2013-02-21 21:46 +0000
From	MRAB <python@mrabarnett.plus.com>
Subject	Re: Checking for valid date input and convert appropriately
References	<92536c34-cf00-4497-b646-ab79fa4ee062@googlegroups.com> <mailman.2190.1361477655.2939.python-list@python.org> <ca0a0004-2504-486f-9a82-3d1f6234932b@googlegroups.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.2201.1361483381.2939.python-list@python.org> (permalink)

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On 2013-02-21 21:22, Ferrous Cranus wrote:
> Τη Πέμπτη, 21 Φεβρουαρίου 2013 10:14:13 μ.μ. UTC+2, ο χρήστης MRAB έγραψε:
>> On 2013-02-21 19:38, Ferrous Cranus wrote:
>> > import datetime from datetime
>>
>> Should be:
>>
>> from datetime import datetime
>>
>> >
>> > try:
>> >      datetime.strptime( date, '%d %m %Y' )
>>
>> That parses the date and discards the result.
>>
>> >      date = date.strptime( '%Y-%m-%d' )
>>
>> 'date' is a string, it doesn't have a 'strptime' method.
>>
>> When you parsed the date you got a datetime object; _that_ has the
>> 'strptime' method.

Correction: the datetime object has the 'strftime' for formatting the
date.
>
> I don't need to store the date i just want to make sure is entered correctly.
> I would like to have the user type the date like
>
> 21 02 2013
> and then convert it to 2013-02-21 because thats how mysql wants the date in order to store it.
> Please show me how to write this.
>

The 'strptime' method parses the string and returns a datetime object,
and you can then use that object's 'strftime' method to format it to
the desired string.

> Also, can you show me how to write it that if so even if the user entered date is wrong it doesn't just crash the cgi-script?i know i can use tr: expect: but i want to avoid it, somehow i need to check the date in the same if statemnt like i do with the other user defined varibles for validity.
>
It _doesn't_ crash the cgi-script.

You're telling it to exit if an exception is raised.

If you don't want the cgi-script to exit, don't call 'exit'.

> if( task and ( price and price.isdigit() and price.__len__() <= 3 ) and ( date and datetime.strptime(date, '%Y-%m-%d') ) ):
>
> Thanks.
>

Thread

Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 11:38 -0800
  Re: Checking for valid date input and convert appropriately MRAB <python@mrabarnett.plus.com> - 2013-02-21 20:14 +0000
    Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 13:22 -0800
      Re: Checking for valid date input and convert appropriately MRAB <python@mrabarnett.plus.com> - 2013-02-21 21:46 +0000
      Re: Checking for valid date input and convert appropriately "Michael Ross" <gmx@ross.cx> - 2013-02-21 23:03 +0100
        Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:08 -0800
          Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:18 -0800
            Re: Checking for valid date input and convert appropriately Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-02-21 23:30 +0000
          Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:18 -0800
          Re: Checking for valid date input and convert appropriately "Michael Ross" <gmx@ross.cx> - 2013-02-22 00:37 +0100
            Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 16:12 -0800
              Re: Checking for valid date input and convert appropriately "Michael Ross" <gmx@ross.cx> - 2013-02-22 01:57 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 20:34 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 20:34 -0800
                Re: Checking for valid date input and convert appropriately rob.marshall17@gmail.com - 2013-02-21 22:20 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 02:06 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 02:06 -0800
                Re: Checking for valid date input and convert appropriately rob.marshall17@gmail.com - 2013-02-21 22:20 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:01 -0800
                Re: Checking for valid date input and convert appropriately Lele Gaifax <lele@metapensiero.it> - 2013-02-22 13:03 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:24 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:28 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:28 -0800
                Re: Checking for valid date input and convert appropriately Lele Gaifax <lele@metapensiero.it> - 2013-02-22 14:35 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 07:07 -0800
                Re: Checking for valid date input and convert appropriately Lele Gaifax <lele@metapensiero.it> - 2013-02-22 16:25 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:38 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:39 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:39 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:38 -0800
                Re: Checking for valid date input and convert appropriately Tim Chase <python.list@tim.thechases.com> - 2013-02-22 10:18 -0600
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 07:07 -0800
                Re: Checking for valid date input and convert appropriately Chris Angelico <rosuav@gmail.com> - 2013-02-23 01:03 +1100
                Re: Checking for valid date input and convert appropriately Andreas Perstinger <andipersti@gmail.com> - 2013-02-22 15:10 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:24 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:01 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:45 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:45 -0800
            Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 16:12 -0800
        Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:08 -0800
    Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 13:22 -0800

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