S. Chris Colbert wrote: > In [15]: t = 0. > > In [16]: time = 10. > > In [17]: while t < time: > ....: print t > ....: t += 0.1 > ....: > ....: > 0.0 > 0.1 > 0.2 > 0.3 > <--snip--> > 9.4 > 9.5 > 9.6 > 9.7 > 9.8 > 9.9 > 10.0 > > > I would think that second loop should terminate at 9.9, no?
It would, if a floating point number could represent the number 0.1 and its multiples precisely, but it can't. > I am missing something fundamental? > Yes. Read http://docs.python.org/tutorial/floatingpoint.html . Then, change "print t" to "print repr(t)" to see what's going on. -- Carsten Haese http://informixdb.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-list
