Gabriel Genellina <[EMAIL PROTECTED]> writes:
> At Friday 22/12/2006 22:24, Pyenos wrote:
>
> > > > "code"
> > > > var=1
> > > > class CLASS:
> > > > def METHOD1:
> > > > def METHOD2:
> > > > var+=var
> > > > return var
> > > > METHOD2() #line8
> > > > return var
> > > > METHOD1() #line10
> > > > "end code"
> > > >
> > > > Q1: does class CLASS inherit var=0 from line1?
> > > yes.
> > > > Q2: does def METHOD1 inherit var=0 from line1?
> > > no.
> > > > Q3: does def METHOD2 inherit var=0 from line1?
> > > no.
> > > > Q3: does line8 return '2'?
> > > no. will get unreferenced var error.
> > > > Q4: does line10 return '2\n2'?
> > > no. will get unreferenced var error.
> >
> >Now I know that Q1 is also no, since var=1 from line 2 is a global
> >variable and I have not declared it as global inside def METHOD2. so
> >var within def METHOD2 is a different variable to the global variable var.
>
> Read the Python Pitfalls I've send some minutes ago, and the tutorial
> (specially http://docs.python.org/tut/node11.html#scopes) and then
> re-answer your own questions.
>
>
> --
> Gabriel Genellina
> Softlab SRL
>
>
>
> __________________________________________________
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thanks for the helpful links. after consideration i think the code
should be more sensible if it is written in this way:
"code"
var=1
def METHOD1():
METHOD2():
global var
var+=var
"end code"
so that it is more clear which var it is using, which in this case
should be from global var and not local var.
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