Dumb newbie back in shell

[Bruno Desthuilliers]

Chris Mellon a écrit :
> On Dec 11, 2007 8:51 AM, Bruno Desthuilliers
> <bruno.42.desthuilliers at wtf.websiteburo.oops.com> wrote:
>> Chris Mellon a écrit :
>> (snip)
>>> What's probably happening is that line_ptr < last_line is not true
>> Indeed.
>>
>>> and the body of the function isn't executed at all. The unbound local
>>>  exception is a runtime error that occurs when the local is accessed,
>>>  not when the function is compiled.
>> Now since the compiler already detected the name as local, why wait
>> execution to signal this error ?
>>
> 
> Because detection assignment to a name in the first AST scan and then
> using LOAD_FAST and STORE_FAST for access to and assigning to that
> name is a simple, easy thing to implement, while doing execution
> analysis to detect that it can't possibly be set before being
> referenced is really hard.

Ok, makes sens.

Now nobody should ever rebind a global name anyway !-)