ok, will attempt to clarify. i want to out put of two numbers [int or float or anything] to be x.xx not x.x. i want two numbers after the decimal not one.
--- On Tue, 6/7/11, Alan Gauld <alan.ga...@btinternet.com> wrote: > From: Alan Gauld <alan.ga...@btinternet.com> > Subject: Re: [Tutor] floats > To: tutor@python.org > Date: Tuesday, June 7, 2011, 1:16 AM > > "Michael bridges" <micha_el2...@yahoo.com> > wrote > > > i want to 10 / 1000 and get 0.01 not 0 > > if 1000 is made 1000.00 then 0.01 is printed > > but that gives 500 / 1000.00 is 0.5 not 0.50 > > > > can someone till me how to get a two decimal precision > every time? > > You are confusing two different things.. > The first case is that of integer versus float division. > You solve that by either explicitly making one of the > numbers a float or by converting to float using the > foloat() operation. > > The second issue is the *representation* of the result. > The number of decimal places displayed is a matter > of representation only, the actual value stored will not > change. Thus 0.5 and 0.50 and 0.50000000 are all > the same value in memory, it is only how they are > printed that changes and that is controlled by how > you choose to format the display. > > Typically you use a format string: > > res = 10/float(20) > "%f" % res > "%7.3f" % res > "%5.1f" % res > "%6e" % res > "%6.4g" % res > > > HTH, > > -- Alan Gauld > Author of the Learn to Program web site > http://www.alan-g.me.uk/ > > > > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
