Hmmm sorry please forgive me. I only did that because the question was relevant. Please forgive me. Sorry again.
Souvik flutter dev On Sat, Apr 18, 2020, 7:52 PM DL Neil via Python-list < python-list@python.org> wrote: > On 19/04/20 1:51 AM, Souvik Dutta wrote: > > I literally tried it!!! And it did not stop because I did not get any > > 1.0 rather I got 0.99999999999 But why does this happen. This is a > > simple math which according to normal human logic should give perfect > > numbers which are not endless. Then why does a computer behave so > > differently? > > Please don't top-post - (human) conversations are normally question > followed by answer, not the other way around! > > Computers use binary, not decimal - asked and answered (see previous > first response, below) > > > > On Sat, 18 Apr, 2020, 7:02 pm DL Neil via Python-list, > > <python-list@python.org <mailto:python-list@python.org>> wrote: > > > > On 19/04/20 1:07 AM, Souvik Dutta wrote: > > > I have one question here. On using print(f"{c:.32f}") where c= > > 2/5 instead > > > of getting 32 zeroes I got some random numbers. The exact thing is > > > 0.40000000000000002220446049250313 > > > Why do I get this and not 32 zeroes? > > > > Approximating decimal numbers as binary values. > > > > Do NOT try this at home! How many lines will the following code > display > > on-screen? > > > > >>> v = 0.1 > > >>> while v != 1.0: > > ... print(v) > > ... v += 0.1 > > > > As an exercise, try dividing 1.0 by 10.0 and then adding the result > to > > itself ten times. > > > > Back in the ?good, old days, a Computer Science course would almost > > certainly involve some "Numerical Analysis", when such issues would > be > > discussed. Not sure that many institutions offer such, these days... > > -- > > Regards =dn > > -- > > https://mail.python.org/mailman/listinfo/python-list > > > > -- > Regards =dn > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
