Problem using exec function & classes

[news python]

if you execute this exemples:

#----------------------
def  test1():
  class c1:
    global n1,n2
  global verify1
  verify1=c1()

>> test1()
>>verify1
<__main__.c1 instance at 0106D2B4>

*****************
* verify is now global *
*****************

but doing this similar exemple ----------->


#----------------------
def test2():
    exec("class c2:\n  global n1,n2")
    exec("global verify2")
    exec("verify2=c2()")

>> test2()
>>verify2
NameError: name 'verify2' is not defined


is somebody have any idea why "exec" instruction don't do the same thing,
and how to correct this problem, please let me know

Thank's

François Abella -- Qualicontrol --