Help me understand this
Gabriel Genellina
gagsl-py at yahoo.com.ar
Tue Jan 30 12:39:28 EST 2007
En Tue, 30 Jan 2007 06:34:01 -0300, Beej <beej at beej.us> escribió:
> But here's one I still don't get:
>
>>>> type(2)
> <type 'int'>
>>>> type((2))
> <type 'int'>
>>>> (2).__add__(1)
> 3
>>>> 2.__add__(1)
> File "<stdin>", line 1
> 2.__add__(1)
> ^
> SyntaxError: invalid syntax
It appears to be a bug, either in the grammar implementation, or in the
grammar documentation.
These are the relevant rules:
attributeref ::= primary "." identifier
primary ::= atom | attributeref | subscription | slicing | call
atom ::= identifier | literal | enclosure
literal ::= stringliteral | integer | longinteger | floatnumber |
imagnumber
An integer is a primary so 2.__add(1) should be valid.
--
Gabriel Genellina
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