Re: [Tutor] dictionaries, objects and scoping...
"John Morris" <[EMAIL PROTECTED]> wrote > So this seems like it will make scope/namespaces a bit > interesting... namespaces in python are literally that, they are spaces where *names* are visible. Objects are something else entirely and assignment only pins a name to an object. So in Python namespaces contriol where you can use a name, not where you can use an object. def f(y): return y+1 x = 66 print f(x) y is a name that is only visible inside f. 66 is a number object associated with x and passed into f where it is associated with y. The number object inside f is the same object outside f only the name has changed.The return value is a new number object (67 in this case). HTH, -- Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] float_info
At 08:59 AM 1/21/2008, Kent Johnson wrote: >This is probably of interest to Dick Moores at least... > From What's New in Python 2.6 >http://docs.python.org/dev/whatsnew/2.6.html > >[Note: A release date has not been set for Python 2.6] > >A new variable in the sys module, float_info, is an object containing >information about the platform's floating-point support derived from the >float.h file. Attributes of this object include mant_dig (number of >digits in the mantissa), epsilon (smallest difference between 1.0 and >the next largest value representable), and several others. (Contributed >by Christian Heimes.) Yes. Thanks, Kent. Dick ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Projects
Guys and Gals, Firstly 'Hi'. So I am new to Python have been learning it for about two months now on and off between working and playing. Its the first language I have tried to learn, I am taking to it quite well and enjoying it, which is always good. The problem I am having is finding project ideas for beginners. I know I should be looking at things I need, but quite honestly the level I am at I think these will be beyond me. Plus I want to master the basics I've learnt before I get ahead of myself. So anyone have any good project ideas, perhaps projects that people have undertaken before?? Thanks in advance! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] dictionaries, objects and scoping...
Just a thought~ The built-in id() function can be useful in helping to sort out stuff. Returns a unique identifier for each object created so you can test whether a different name is a different object or just a different name for the same object. (This is what the 'is' operator does... Note: the 'is' operator and the '==' operator are not the same) ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
