The loop runs to completion for me on openSUSE Tumbleweed and both Python 2.7 64bits and Python 3.4 64bits.
On Thu, Jul 2, 2015 at 4:52 PM, Steven D'Aprano <st...@pearwood.info> wrote: > Despite the title, this is not one of the usual "Why can't Python do > maths?" "bug" reports. > > Can anyone reproduce this behaviour? If so, please reply with the version > of > Python and your operating system. Printing sys.version will probably do. > > > x = 1 - 1/2**53 > assert x == 0.9999999999999999 > for i in range(1, 1000000): > if int(i*x) == i: > print(i); break > > > Using Jython and IronPython, the loop runs to completion. That is the > correct behaviour, or so I am lead to believe. Using Python 2.6, 2.7 and > 3.3 on Centos and Debian, it prints 2049 and breaks. That should not > happen. If you can reproduce that (for any value of i, not necessarily > 2049), please reply. > > See also http://bugs.python.org/issue24546 for more details. > > > > -- > Steven > > -- > https://mail.python.org/mailman/listinfo/python-list >
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