human
What is a the Python program you requested given the following:
I am working on the file "Python/Chapter-07/Heap.ipynb".
The first task is:
Implementing Priority Queues as Heaps
Ths notebook presents <em style="color:blue">heaps</em>.  We define the set $\mathcal{H}$ of heaps by induction:

$\texttt{Nil} \in \mathcal{H}$.
$\texttt{Node}(p,v,l,r) \in \mathcal{H}$ if and only if the following is true:

$p \leq l \;\wedge\.
p \leq r$
The priority stored at the root is less than or equal to every other priority stored in
the heap. This condition is known as the <em style="color:blue">heap condition</em>.
It is important to remember that we associate <em style="color:blue">high</em> priorities
with <em style="color:blue">small</em> numbers.
      - $\mid l.\texttt{count}() - r.\texttt{count}() \mid \;\leq\, 1$
The number of elements in the left subtree differs from the number of elements stored in
the right subtree by at most one.
This condition is known as the  <em style="color:blue;">balancing condition</em>.
      - $l \in \mathcal{H} \;\wedge\.
r \in \mathcal{H}$
Both the left and the right subtree of a heap are heaps.



The class Heap is a superclass for constructing heaps.  We will later define the classes Nil and Node that represent heaps of the form $\texttt{Nil}$ and $\texttt{Node}(p, v, l, r)$ respectively. The class Heap has one static variable sNodeCount which is needed to assign unique identifiers to different nodes.  Every object of class Heap has a uniques identifier mID that is stored as a member variable.  This identifier is used by graphviz.  In order to generate new identifiers we use the static variable sNodeCount as a counter.
Can you write Python program for it?
assistant
#Here is the Python program you requested.

class Heap:
    sNodeCount = 0
    
    def __init__(self):
        Heap.sNodeCount += 1
        self.mID = str(Heap.sNodeCount)
        
    def getID(self):
        return self.mID  # used only by graphviz