Whither datetime.date ?

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  • Harald Hanche-Olsen
    #1

    Whither datetime.date ?

    I'm confused. I was going to try linkchecker, and it dies with a
    traceback ending in

    File "/usr/local/lib/python2.4/calendar.py", line 32, in _localized_mont h
    _months = [datetime.date(2 001, i+1, 1).strftime for i in range(12)]
    AttributeError: 'module' object has no attribute 'date'

    Sure enough, there is no datetime.date, but there is a datetime.Date:

    Python 2.4 (#2, Feb 19 2005, 20:35:23)
    [GCC 3.4.2 [FreeBSD] 20040728] on freebsd5
    Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
    >>> import datetime
    >>> dir(datetime)[/color][/color][/color]
    ['Date', 'DateTime', ...]

    However, the Library Reference clearly states that datetime.date
    should exist. Granted, it's been a while since I used python in
    anger, but isn't this what it says?

    Welcome to Python.org
    http://www.python.org/doc/2.4/lib/node243.html
    The official home of the Python Programming Language

    Welcome to Python.org
    http://www.python.org/doc/2.4/lib/datetime-date.html
    The official home of the Python Programming Language


    Moreover, the datetime.date class is supposed to have a strftime()
    method. datetime.Date does not.

    I'm beginning to wonder if the FreeBSD python package is at fault.

    Or what is really going on here?

    --
    * Harald Hanche-Olsen <URL:http://www.math.ntnu.n o/~hanche/>
    - Debating gives most of us much more psychological satisfaction
    than thinking does: but it deprives us of whatever chance there is
    of getting closer to the truth. -- C.P. Snow
    Tags: None
    • Diez B. Roggisch
      #2
      Re: Whither datetime.date ?

      Harald Hanche-Olsen wrote:[color=blue]
      > I'm beginning to wonder if the FreeBSD python package is at fault.[/color]

      Maybe - at my system, it has no Date or DateTime

      Python 2.4.1a0 (#2, Feb 9 2005, 12:50:04)
      [GCC 3.3.5 (Debian 1:3.3.5-8)] on linux2
      Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
      >>> import datetime
      >>> dir(datetime)[/color][/color][/color]
      ['MAXYEAR', 'MINYEAR', '__doc__', '__file__', '__name__', 'date',
      'datetime', 'datetime_CAPI' , 'time', 'timedelta', 'tzinfo'][color=blue][color=green][color=darkred]
      >>>[/color][/color][/color]


      Maybe this is a clash between a custom datetime module and the python one?

      What does

      python2.4 -v -c "import datetime"

      give you?
      --
      Regards,

      Diez B. Roggisch

        Comment

        • Tim Peters
          #3
          Re: Whither datetime.date ?

          [Harald Hanche-Olsen][color=blue]
          > I'm confused. I was going to try linkchecker, and it dies with a
          > traceback ending in
          >
          > File "/usr/local/lib/python2.4/calendar.py", line 32, in _localized_mont h
          > _months = [datetime.date(2 001, i+1, 1).strftime for i in range(12)]
          > AttributeError: 'module' object has no attribute 'date'
          >
          > Sure enough, there is no datetime.date, but there is a datetime.Date:
          >
          > Python 2.4 (#2, Feb 19 2005, 20:35:23)
          > [GCC 3.4.2 [FreeBSD] 20040728] on freebsd5
          > Type "help", "copyright" , "credits" or "license" for more information.[color=green][color=darkred]
          > >>> import datetime
          > >>> dir(datetime)[/color][/color]
          > ['Date', 'DateTime', ...]
          >
          > However, the Library Reference clearly states that datetime.date
          > should exist. Granted, it's been a while since I used python in
          > anger, but isn't this what it says?
          >
          > http://www.python.org/doc/2.4/lib/node243.html
          > http://www.python.org/doc/2.4/lib/datetime-date.html
          >
          > Moreover, the datetime.date class is supposed to have a strftime()
          > method. datetime.Date does not.
          >
          > I'm beginning to wonder if the FreeBSD python package is at fault.
          >
          > Or what is really going on here?[/color]

          As you've deduced, you're certainly not getting Python's builtin
          datetime module. Therefore you must be getting some other datetime
          module. Run Python with the "-v" switch to get output telling you how
          imports are resolved. That will show you where this other datetime
          module is coming from. Remember that Python searches along sys.path
          to resolve imports, taking the first thing it finds with the right
          name. You almost certainly have something _called_ datetime earlier
          in your PYTHONPATH than where the standard Python libraries appear.

            Comment

            • Harald Hanche-Olsen
              #4
              Re: Whither datetime.date ?

              + Tim Peters <tim.peters@gma il.com>:

              | As you've deduced, you're certainly not getting Python's builtin
              | datetime module.

              Argh. Yeah, I've had one lying around in my personal python directory
              since 2000, had totally forgotten it was there. This one ...

              *** Author: Jeff Kunce <kuncej@mail.co nservation.stat e.mo.us>
              *** Download from: http://starship.skyport.net/crew/jjkunce

              Removed it, now all is well.

              Thanks for pointing out the blindingly obvious.

              --
              * Harald Hanche-Olsen <URL:http://www.math.ntnu.n o/~hanche/>
              - Debating gives most of us much more psychological satisfaction
              than thinking does: but it deprives us of whatever chance there is
              of getting closer to the truth. -- C.P. Snow

                Comment

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