a simple question about class composition

[David Schonberger]

I have the following two class definitions in a file called myclass.py:

###begin###

class MyClass:
    def __init__(self, txt):
        self.text = txt
    def printText(self):
        print "Text for MyClass " + str(self.text) + "\n"

class MyOtherClass:
    def __init__(self,txt):
        self.text = txt
    def printText2(self):
        print "Twice the text for MyOtherClass " + str(2*self.text) + "\n"

###end###

I then have the following code in a file called mycontainerclass.py:

###begin###

from myclass import *

class MyContainerClass:
    def __init__(self, txt):
        self.text = txt
        self.one = MyClass(" I like Vanilla Coke")
        self.two = MyOtherClass("I like Classic Coke")


    def printContainerText(self):
        print "Container class text " + str(self.text) + "\n"

    def invokePrint(self):
        self.one.printText()
        self.two.printText2()

if __name__ == "__main__":
   myobj = MyContainerClass("I like both Vanilla Coke and Classic Coke")
   myobj.invokePrint()
   myobj.printContainerText()

###end###

When I try to run this code for MyContainerClass I get the following
error:

###begin###

Traceback (most recent call last):
  File "C:/Python22/mycontainerclass.py", line 18, in ?
    myobj = MyContainerClass("I like both Vanilla Coke and Classic Coke")
  File "C:/Python22/mycontainerclass.py", line 7, in __init__
    self.two = MyOtherClass("I like Classic Coke")
NameError: global name 'MyOtherClass' is not defined

###end###

Any idea what is happening? I came across similar code in Lutz's "Learning
Python" (a good three years old; perhaps this is part of the problem). I
am running Python 2.2.1 on Win2K but have run into the same problem on
Linux. Note that if I comment out the stuff about MyOtherClass in
MyContainerClass--i.e. the stuff having to do with self.two--everything
works fine, with MyClass successfully embeded in MyContainerClass. Any
help would be appreciated. Thanks.

Regards,
David

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* David Schonberger                                         *
* Department of Electrical Engineering and Computer Science *
* University of Kansas                                      *
* email: schond at eecs.ukans.edu                              *
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