>
> > > I guess you could call the associative law of multiplication "dumb
> > > luck", but most mathematicians will consider that hate speech.
> >
> > My apologies for not understanding your example. The counter
> > example I had in my head, and should have written down,
> > was something like:
> >
> > 15mpg * 7l == how many miles?
>
Using pint:
In [76]: U = pint.UnitRegistry()
In [77]: (15 * U.miles / U.gallons * 7 * U.liter).to('miles')
Out[77]: 27.7380654976056 <Unit('mile')>
A bit verbose, perhaps, but to me clear, and the operator precedence rules
seem to "just work".
And it you want it a tad less verbose, you can give some of those units
names:
In [78]: mpg = U.miles / U.gallons
In [79]: l = U.liter
In [80]: (15 * mpg * 7 * l).to('miles')
Out[80]: 27.7380654976056 <Unit('mile')>
My question for the folks that want units built in to Python is "what's so
hard about that?
Ricky wrote:
"Python is so painful to use for units I've actually avoided it,"
Really? have you tried pint? or anything else? what is so painful about
this?
-CHB
--
Christopher Barker, PhD (Chris)
Python Language Consulting
- Teaching
- Scientific Software Development
- Desktop GUI and Web Development
- wxPython, numpy, scipy, Cython
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