Binary Tree Implementation in Python

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A binary tree is a data structure of tree in which every node has at most two children, which are referred to as the left child and the right child.


Binary Tree implementation in Python

To implement a binary tree in python, we have to first define the Node class, which will represent a single node in the tree. Each node will have one left and one right node only:

class Node: def __init__(self, data): self.data = data self.left = None self.right = None

Now we can start creating our tree:

root = Node(1) root.left = Node(2) root.right = Node(3) root.left.left = Node(4) root.left.right = Node(5) root.right.left = Node(6) root.right.right = Node(7)
Full program :
class Node: def __init__(self, data): self.data = data self.left = None self.right = None def print_tree(root, space=0, t=0): COUNT = 3 if root is None: return space += COUNT print_tree(root.right, space, 1) for x in range(COUNT, space): print(" ",end = "") if t == 1 : # Right node print("/ ", root.data) elif t == 2 : # Left node print("\ ", root.data) else: # Root node print(root.data) #Process left child print_tree(root.left, space, 2) root = Node(1) root.left = Node(2) root.right = Node(3) root.left.left = Node(4) root.left.right = Node(5) root.right.left = Node(6) root.right.right = Node(7) print_tree(root)

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