Python相当于PHPDoc Blocks？

I am new to Python coming from PHP, I know Python has Docstrings, but how can I do this on class variables? Let's say in PHP I have:

class Animal {
    /**
     * @var Noise
    */
    public $noise
}

Now how would I implement this is python? Something like:

class Animal:
  # Here I want to tell my IDE that this is a noise object, not yet set
  self.noise = None

These are called "attribute docstrings." You can put the docstring after the declaration of the class, or in the __init__ method:

From PEP 257:

String literals occurring immediately after a simple assignment at the top level of a module, class, or init method are called "attribute docstrings".

(see also PEP 258).

There are lots of resources on this, just search for "attribute docstrings," e.g., this answer.