On 7/27/2010 2:04 PM, Guido van Rossum wrote:
On Tue, Jul 27, 2010 at 5:25 PM, Robert Kernrobert.firstname.lastname@example.org wrote:
I've occasionally wished that we could repurpose backticks for expression literals:
expr = `x + y*z` assert isinstance(expr, ast.Expression)
Maybe you could just as well make it a plain string literal and call a function that parses it into a parse tree:
expr = parse("x + y*z") assert isinstance(expr, ast.Expression)
The advantage of this approach is that you can define a different language too...
and that is already exists, and is more visible than backticks
def expr(s): return ast.parse(s, mode='eval') # defaults is 'exec'
e = expr('a+b') e
<_ast.Expression object at 0x00F8DCF0>