[DB-SIG] dbiDate - help urgently needed

[Lloyd Kvam]

dbiDate is form the old 1.0 API

http://www.python.org/topics/database/DatabaseAPI-2.0.html
Python Database API v2.0

It specifies using mx.DateTime for date time values.


The Python language just recently evolved to unify tpyes and classes.
 >>> isinstance(1, int)
1
 >>> import mx.DateTime as DT
 >>> d = DT.Date(2003,6,2)
 >>> d
<DateTime object for '2003-06-02 00:00:00.00' at 13dd310>
 >>> isinstance(d, DT.DateTime)
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
TypeError: isinstance() arg 2 must be a class or type
 >>> isinstance(d, DT.DateTimeType)
1

Not all of the modules support isinstance in the way you would expect.  So
we will probably be using type(obj_reference) for a while longer.

Jeff Sacksteder wrote:
>> Do print `type(known_dbiDate_object)`, and that will print enough 
>> information to figure out what type it actually is. If you're having 
>> difficulty with type and isinstance, then there's a good chance you're 
>> not really looking at dbiDate objects. 
> 
> 
> 
> for item in my_list:
>    print type(item)
> 
> returns the following-
> 
> <type 'float'>
> <type 'string'>
> <type 'DbiDate'>
> 
> I want to do something like-
> 
> for item in my_list:
>    if type(item) is StringType:
>       print 'Foo'
>    elif type(item) is DbiDate:
>       print 'Bar'
>    else:
>       print 'Baz'
> 
> But DbiDate is an object, not a type. I thought is instance might be the 
> ticket, since it can compare classes _and_ types. No luck so far. 
> Apparently I am the first person in the history of DBI to want to do this.
> 
> 
> _______________________________________________
> DB-SIG maillist  -  DB-SIG at python.org
> http://mail.python.org/mailman/listinfo/db-sig
> 


-- 
Lloyd Kvam
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