[Tutor] Object/Class Beginner Questions

[Ben Ganzfried]

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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