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Re: Checking for valid date input and convert appropriately

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Xref csiph.com comp.lang.python:39486

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Τη Παρασκευή, 22 Φεβρουαρίου 2013 12:03:59 π.μ. UTC+2, ο χρήστης Michael Ross έγραψε:
> On Thu, 21 Feb 2013 22:22:15 +0100, Ferrous Cranus <nikos.gr33k@gmail.com>  
> 
> 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.
> 
> >
> 
> > 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.
> 
> >
> 
> > 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.
> 
> >
> 
> 
> 
> You *have* to try/expect in order to not have the script crash.
> 
> Think user typo: 21 02 2ß13
> 
> 
> 
> Personally, I'd use a javascript on the html so users can't POST invalid  
> 
> dates.
> 
> I use mootools for that. It accepts 21/02/2013, 21-02-2013 and 21.02.13 as  
> 
> input,
> 
> and you end up with 21.02.2013 posted to your cgi in any case.

i just want to check for date validity from within ha same if statemnt like i check the other variables and i tried a regualr expression just now:

if( task and ( price and price.isdigit() and price.__len__() <= 3 ) and ( date and re.search( r'(\d+) (\d+) (\d+)', date ) ) ):

Do i ahve somehting wrong in it?

will the if become true if the user enters 21 02 2013 ?

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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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