__init__.py 文件源码

def _compile(self):
        c = _NameSubstitute()
        t = c.visit(copy(self._tree))
        name = repr(self)
        maxarg = max((int(name[1:]) for name in c.name_cache), default=0) + 1
        args = [
            ast.arg(arg='_%d' % n, annotation=None)
            for n in range(1, maxarg)
        ]
        code = compile(
            ast.fix_missing_locations(ast.Module(
                body=[
                    ast.FunctionDef(
                        name=name,
                        args=ast.arguments(
                            args=args,
                            vararg=None,
                            kwonlyargs=[],
                            kw_defaults=[],
                            kwarg=None,
                            defaults=[],
                        ),
                        body=[ast.Return(value=t)],
                        decorator_list=[],
                        returns=None,
                        lineno=1,
                        col_offset=0,
                    ),
                ],
            )),
            name,
            'exec',
        )
        ns = {}
        exec(code, ns)
        return asconstants(**self._constants)(ns[name])