Don't understand syntax error: unqualified exec is not allowed ..

[Terry Reedy]

Stef Mientki wrote:
> hello,
> 
> I've syntax error which I totally don't understand:
> 
> ########## mainfile :
> import test_upframe2
> 
> if __name__ == '__main__':
>  var1 = 33
>  code = 'print var1 + 3 \n'
>  test_upframe2.Do_Something_In_Parent_NameSpace ( code )
> 
> ########### file = test_upframe2 :
> class Do_Something_In_Parent_NameSpace ( object ) :
>  def __init__ ( self, code ) :
>      def do_more ( ) :
>      nonvar = [3,4]
>      while len ( nonvar ) > 0 :            # <<<===
>        nonvar.pop()                        # <<<===

Indendation is screwed. Is the above all do_more body?

>    import sys
>    p_locals  = sys._getframe(1).f_locals

Which locals does this get you? __init__'s? (locals()?)

>    p_globals = sys._getframe(1).f_globals

Isn't this just the same as globals()?

>    try :
>      exec ( code, p_globals, p_locals )

This is 3.0 exec function syntax.  Postings should specify which 
interpreter you are running, especially when mucking with
internals.

>    except :
>      print 'ERROR'
> 
> 
> gives me:
> SyntaxError: unqualified exec is not allowed in function '__init__' it 
> contains a nested function with free variables (gui_support.py, line 
> 408)           
> "unqualified exec" : I thought that meant there is some ambiguity in the 
> namespace, but  I explictly definied the namespace
> 
> The function "do_more"  is never called, so what does it matter what's 
> in there ?
> 
> If I remove the while-loop (which of course I can't) the syntax error 
> disappears.
> 
> I can place the function either as a class method or as a normal 
> function outside the class,
> which both works well.
> But I want the method / function not to be hidden.

Since you are hiding it, I presume you mean to be, not not to be.
> 
> Why does the above syntax error appear ?
> Are  there other ways to hide the function ?

Either use module level __all__ or name the function _do_more and anyone 
will know it is private to the module.