Harold wrote:
On Jun 25, 9:04 pm, Chris Torek <nos...@torek.net> wrote:
I'm curious. Is there a way to get the number of significant digits
for a particular Decimal instance?
Yes:
def sigdig(x):
"return the number of significant digits in x"
return len(x.as_tuple()[1])
Great, Chris, this is (almost) exactly what I needed.
To make it work for numbers like 1200, that have four digits but only
two of them being significant, I changed your snippet to the
following:
class Empirical(Decimal) :
@property
def significance(self) :
t = self.as_tuple()
if t[2] < 0 :
return len(t[1])
else :
return len(''.join(map(str,t[1])).rstrip('0'))
Empirical('1200.').significance
2
Empirical('1200.0').significance
5
What about when 1200 is actually 4 significant digits? Or 3?
~Ethan~
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