lol Python

lol.py

import ast
import inspect


class NameVisitor(ast.NodeVisitor):
    def __init__(self, default_value=None):
        self.default_value = default_value

    def visit_Name(self, node):
        if isinstance(node.ctx, ast.Load):
            if node.id not in globals():
                globals()[node.id] = self.default_value


class PHPTon(object):
    def show(self, x):
        print "VALUE: {!r}".format(x)

    def __getattribute__(self, name):
        frame = inspect.stack()[1]
        try:
            call = ast.parse(frame[-2][0])
            visitor = NameVisitor()
            visitor.visit(call)
        finally:
            del frame

        return super(PHPTon, self).__getattribute__(name)


p = PHPTon()
p.show(x)