questions about scope/threading

[Aahz]

In article <aokrjb$eaj$1 at newsreader.mailgate.org>,
eugene kim  <eugene1977 at hotmail.com> wrote:
>Aahz:
>>
>>The trick with Python is that ALL objects are truly global
> ?? i 'm really confused, what is refered as global? i thought 'var1' is 
>only global here on below example.

Python uses "global" to mean "module scope".  There's also the common
meaning, which is "accessible everywhere"; that's the meaning I'm using
for "truly global".

>var1 = 1
>
>class Class1:
>   self.var2 = 2
>   var3 = 3
>
>class Class2(threading.Thread)
>   self.var4 = 4
>   var5 = 5
>   def method1(self):
>       var6 = 6

Thing is, while var3 is not a module global, any thread can access that
name through Class1.var3 -- therefore, the object bound to Class1.var3
is a completely global object, and you have to be careful what you do
with Class1.var3 (or the object bound to it if the object is mutable).
Tricky stuff.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

A: No.
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