True

Andrew Bennetts andrew-pythonlist at puzzling.org
Mon Oct 20 05:50:05 EDT 2003

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On Sun, Oct 19, 2003 at 08:17:15AM -0700, David Eppstein wrote:
> In article <3f929cf0$1_1 at themost.net>,
>  "Paul Watson" <pwatson at redlinec.com> wrote:
> 
> > Then, what is the best way to write boolean operations for Python 2.1 so
> > that it will be as 2.3+ ready as possible?
> 
> I've been including the following at the start of some of my code:
> 
> if 'True' not in globals():
>    globals()['True'] = not None
>    globals()['False'] = not True

Why not simply:

try:
    True
except NameError:
    True = (1 == 1)   # or not None, if you prefer
    False = not True

Or were you trying to change the __builtins__ by using globals()?

-Andrew.

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