[issue5118] '%.2f' % 2.545 doesn't round correctly

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

> So you might want to reopen the bug. But either way I don't consider
> this bug as really serious either.

I don't understand.  As far as I can see '%.2f' % 2.545 is returning
the correct result: there is no bug here, so no need to reopen. '%.2f' 
should *not* return 2.55;  it should return 2.54, which is exactly what it 
does.  round(2.545, 2) should also return 2.54, but returns 2.55 instead;  
issue 1869 is already open for this.

You're correct that the float formatting doesn't use round:  it does 
whatever the platform C library's sprintf does.

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<http://bugs.python.org/issue5118>
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