docs: def execute(func: types.FunctionType):
      """
      >>> from Redy.Magic.Classic import execute
      >>> x = 1
      >>> @execute
      >>> def f(x = x) -> int:
      >>>     return x + 1
      >>> assert f is 2
      """
      spec = getfullargspec(func)
      default = spec.defaults
      arg_cursor = 0
  
      def get_item(name):
          nonlocal arg_cursor
          ctx = func.__globals__
          value = ctx.get(name, _undef)
          if value is _undef:
              try:
                  value = default[arg_cursor]
                  arg_cursor += 1
              except (TypeError, IndexError):
                  raise ValueError(f"Current context has no variable `{name}`")
          return value
  
      return func(*(get_item(arg_name) for arg_name in spec.args))