Compute pi to base 12 using Python?

[Dick Moores]

Paul Rubin wrote at 18:20 4/13/2005:
>Dick Moores <rdm at rcblue.com> writes:
> > I need to figure out how to compute pi to base 12, to as many digits
> > as possible. I found this reference,
> > <http://mathworld.wolfram.com/Base.html>, but I really don't
> > understand it well enough. Could someone show me how to do what I need?
>
>Using the GNU "bc" utility:
>
>   $ bc -l
>   bc 1.06
>   Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
>   This is free software with ABSOLUTELY NO WARRANTY.
>   For details type `warranty'.
>   scale = 3000    # number of output places wanted
>   obase = 12      # output base
>   print 4 * a(1)  # pi = 4*arctan(1)

I don't believe GNU "bc" is available for Windows, is it?

Thanks,

Dick Moores
rdm at rcblue.com