On Mon, Mar 30, 2009 at 05:00:42PM +0200, Iwan Vosloo wrote:
> (Pdb) value.__class__
> <class 'decimal.Decimal'>
>
> And yet:
> (Pdb) value.__class__ is Decimal
> False
>
> Seems like the imported Decimal and the Decimal of which value is an
> instance are not the same thing.
>
> Specifically, the imported Decimal seems to the the "right" one, since:
> (Pdb) Decimal is getattr(sys.modules['decimal'],'Decimal')
> True
>
> Where does the Decimal class come from, of which value is an instance?
Pretty normal situations that manipulate with sys.path. One can easily
imports a module two times:
>>> import sys, os, decimal
>>> decimal.__file__
'/usr/lib/python2.5/decimal.pyc'
>>> os.chdir('/usr/lib/python2.5')
>>> sys.path.insert(0, '.')
>>> del sys.modules['decimal']
>>> import decimal as decimal2
>>> decimal2.__file__
'./decimal.pyc'
>>> decimal.Decimal is decimal2.Decimal
False
Oleg.
--
Oleg Broytmann http://phd.pp.ru/ p...@phd.pp.ru
Programmers don't die, they just GOSUB without RETURN.
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