Pierre Barbier de Reuille wrote:
> Proposal
> ========
>
> First, I think it would be best to have a syntax to represent symbols.
> Adding some special char before the name is probably a good way to
> achieve that : $open, $close, ... are $ymbols.
How about using the prefix "symbol." instead of "$"?
>>> symbol.x
symbol.x
>>> symbol.y
symbol.y
>>> x = symbol.x
>>> x == symbol.x
True
>>> x == symbol.y
False
>>> symbol.file.opened
symbol.file.opened
>>> symbol.file.closed
symbol.file.closed
>>> symbol.spam(symbol.eggs)
symbol.spam(symbol.eggs)
And the definition of symbol that I used:
>>> class symbol(object):
... class __metaclass__(type):
... def __getattr__(cls, name):
... return symbol(name)
... def __getattr__(self, name):
... return symbol('%s.%s' % (self.name, name))
... def __init__(self, name):
... self.name = name
... def __eq__(self, other):
... return self.name == other.name
... def __repr__(self):
... return '%s.%s' % (type(self).__name__, self.name)
... def __call__(self, *args):
... arg_str = ', '.join(str(arg) for arg in args)
... return symbol('%s(%s)' % (self.name, arg_str))
...
It doesn't work with "is", but otherwise I think it's pretty close to
your proposal, syntax-wise. Is there something obvious this won't
address for you?
STeVe
--
http://mail.python.org/mailman/listinfo/python-list
