scopes? (is: I don't get it ...)

[Axel Bock]

Hi all, 

a simple question about modules (and perhaps scopes), illustrated with a
simple example. 
Given is the module listed down here:
test.py:
	t1 = []
	t2 = 0
	def testme():
	    print t1
	    print t2
	    #t2+=1

now I'm doing int the python shell:
	>>> import test
	>>> test.testme()
	[]
	0
	>>> 
great, huh?
now I remove the comment from line 3 of testme(), and going for it again: 
	>>> reload(test)
	<module 'test' from 'test.py'>
	>>> test.testme()
	[]
	Traceback (most recent call last):
	  File "<stdin>", line 1, in ?
	  File "test.py", line 6, in testme
	    print t2
	UnboundLocalError: local variable 't2' referenced before assignment
	>>> 
so. WHY???? I mean, print works, so it gets the variable. If I wouldn't
know it, I could hardly print the value, right?? So what's the problem
with the assignment in line 3?

thankful for any help! :-)


Greetings, 

		Axel.