How to write string (float) to file?
root at rainerdeyke.com
Tue Aug 28 21:30:01 CEST 2001
"Tim Peters" <tim.one at home.com> wrote in message
news:mailman.999025123.7905.python-list at python.org...
> [Rainer Deyke, on '%.2f'%(float(a)/b)' as a way to get 2 digits after
> the decimal point]
> > That's unreliable. Use this instead:
> > c = (a * 100) / b
> > s = '%03d' % c
> > file.write(s[:-2] + '.' + s[-2:])
> Rainer, your loathing of fp is fine as a personal choice, but let's not
> poison our youth without stronger cause than this <wink>. My bet is the
> poster would rather, e.g., see '0.67' than '0.66' given a=2 and b=3. If
> you're going to fake fp by hand, then you're responsible for faking all of
> it, incl. sensible rounding.
c = (((a * 200) / b) + 1) / 2
s = '%03d' % c
file.write(s[:-2] + '.' + s[-2:])
Rainer Deyke (root at rainerdeyke.com)
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