[Python-ideas] SI scale factors in Python

[Xavier Combelle]

On 25/08/2016 06:28, Ken Kundert wrote:
> All,
>     I propose that support for SI scale factors be added to Python. This would
> be very helpful for any program that heavily uses real numbers, such as those
> involved with scientific and engineering computation. There would be two primary
> changes.  First, the lexer would be enhanced to take real literals with the
> following forms:
>
>     c1 = 1nF          (same as: c1 = 1e-9        # F )
>     c = 299.79M       (same as: c = 299.79e6         )
>     f_hy = 1.4204GHz  (same as: f_hy = 1.4204e9  # Hz)
>
There is little difference (except that it ask for a syntax modification
which should be heavy weighted)
 between this proposition and

    c1 = 1*nF          (same as: c1 = 1e-9        # F )
    c = 299.79*M       (same as: c = 299.79e6         )
    f_hy = 1.4204*GHz  (same as: f_hy = 1.4204e9  # Hz)

with correct definition of the constants  in a library.
So a library would be welcome.