On Tue, 06 Sep 2005 09:27:48 +0200, mg <[EMAIL PROTECTED]> wrote: >Hi everybody... > >We try to white scripts with Pyrhon 2.4 for an acoustic simulation and >we wrote these follow lines : > ><begin script> >c = 340 340 is an integer, which is different from 340. >i =j=k= 1 >sum_ = 23 also an integer >table = [] >freq = round((c/2*(sum_)**0.5),2) c/2 is integer/integer, which is not the same as c/2.0 rules all-integer arimetic generally produces integer results, so (unless you import division from __future__) pay attention or write your constants with decimal points even if the values are exact integers. note: >>> 5/2 2 >>> from __future__ import division >>> 5/2 2.5
>print freq >table.append([freq,(i,j,k)]) >print i,j,k,' freq',freq >for item in table: print item ><end script> > >The problem is simple. The function 'round' allow to obtain the value >with the specified number of digits after the ",". Then, when the >variable 'freq' is printed, there is no problem; but when freq is set in >the table and the table printed, all the digits are come back. > >Is it a bug or a control behavour ? I don't understand ?!?!?!?!... > Others have pointed out the output formatting and binary representation problems behind your question, but I thought you might not realize the above. Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
