I actually just figured it out (since the tutorial talks about the difference in indentation between a method and a function in a later chapter). Basically, a method is within a class and therefore cannot be called from the command prompt whereas a function that stands by itself in a script can be called from the command prompt.
Although if this isn't quite right or there's more to it, I would still definitely appreciate any advice you have. Thanks again, Ben On Fri, Jan 14, 2011 at 1:53 PM, Ben Ganzfried <ben.ganzfr...@gmail.com>wrote: > Hey guys, > > I'm using a tutorial geared for a 2.x version of Python and I am currently > using Python 3.1-- so it is possible that my confusion has to do with > different notations between them. But in any case, here is what I have: > > >>> type(Time) > <class 'type'> > >>> t1 = Time() > >>> type(t1) > <class '__main__.Time'> > > where: > > class Time: > def __init__(self, hours = 0, minutes = 0, seconds = 0): > self.hours = hours > self.minutes = minutes > self.seconds = seconds > > def print_time(t1): > print(t.hours, ":", t.minutes, ":", t.seconds) > > Now the book I am working with has the following example: > > >>> type(Point) > <type 'classobj'> > >>> p = Point() > >>> type(p) > <type 'instance'> > > My questions are the following: > 1) Why is the type for my class Time : >>> type(Time) > <class > 'type'> > when the type for their class Point is: <type 'classobj'> > Also, what is the difference between "class" and "classobj" in this case? > 2) Why does my t1 object give the following as its type: <class > '__main__.Time'> > And in their p object example the type is: <type 'instance'>? > 3) What is happening such that when I try to call my print_time(t1) > function I get the following error: > >>> t1 = Time() > >>> t1.hours = 3 > >>> t1.minutes = 30 > >>> t1.seconds = 45 > >>> print_time(t1) > Traceback (most recent call last): > File "<pyshell#77>", line 1, in <module> > print_time(t1) > NameError: name 'print_time' is not defined > > > Thank you very much. > > Sincerely, > > Ben > >
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