Thank you for your time On 11 Nov 2014 15:02, "Dave Angel" <da...@davea.name> wrote:
> William Becerra <wbecer...@gmail.com> Wrote in message: > > Hello, I'm new to programming using Python 2.7.8 and Windows 8 OSI'm > reading How to Think Like a Computer Scientist - learning with pythonon > chapter 12.2theres the following code: class Point: passblank = > point()blank.x = 3.0blank.y = 4.0 > >>>print blank.x > > 3.0>>print blank.y4.0 > >>>print blank<__main__.point instance at 0x02B38E40> > > > > the author says the the < 0x02B38E40> is in hexadecimal form > > heres is my question:How can i convert from hexodecimal form to decimal > form? > > You don't care about that 0x02.. number, except to distinguish > this object from another. And in code you'd do that with the 'is' > operator. > That hex number happens to be an address in memory for one of the > python implementations. > > > is there any source i can read on it?basically what i want is to use the > attributes blank.x and blank.y as a single point like in the mathematics > format (x, y) co-ordinates so that i can workout distance > > thank you > > > > > > > If you want a tuple of the coordinates, you could do (blank.x, > blank.y) And if you need to do arithmetic, go right ahead. > Like > > x, y = blank.x, blank.y > dist_from_org = sqrt(x*x + y*y) > > > > -- > DaveA > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > https://mail.python.org/mailman/listinfo/tutor >
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