ss="prompt">...</code>     <code class="keyword">def</code> <code class="function">__init__</code>(self, a):
<code class="prompt">...</code>         self.y = a
<code class="prompt">...</code>         <code class="string">"""Docstring for instance variable A.y</code>
</pre></div>

<p> Variables may also be documented using <i>comment docstrings</i>.
If a variable assignment is immediately preceeded by a comment whose
lines begin with the special marker "<code><b>#:</b></code>", or is
followed on the same lin