scope of function parameters

[Laurent Claessens]

Le 30/05/2011 11:02, Terry Reedy a écrit :
> On 5/30/2011 3:38 AM, Laurent wrote:
>
>>  Cool. I was thinking that "5" was the name, but
>>   >>>  5.__add__(6)
>>  File "<stdin>", line 1
>>  5.__add__(6)
>
>
> Try 5 .__add__(6)

What is the rationale behind the fact to add a space between "5" and 
".__add__" ?
Why does it work ?

Laurent