# Python Programs on Trees

A tree is a data structure that uses references to connect data elements in a hierarchical form. Every tree has a root node from which we can access all the elements of the tree. The tree structure consists of root nodes, leaf nodes, and internal nodes. Each node has a reference to one of its children, which is known as an edge. Trees are often used for efficient data storage and fast browsing and indexing when searching for data.

The following section contains Python programs on trees, binary trees, binary search trees, binomial tree, nodes of a tree, tree traversals, BFS, and DFS tree traversals. Each sample program includes a program description, Python code, and program output. All examples have been compiled and tested on Windows and Linux systems.

Here is the listing of Python programming examples on Tree:

## 1. Python Programs on Binary Tree

Program Description
Count Number of Nodes in Binary Tree in Python Python Program to Count the Number of Nodes in Binary Tree
Sum of All Nodes in a Binary Tree in Python Python Program to Find the Sum of All Nodes in a Binary Tree

## 2. Python Programs on Binary Search Tree

Program Description
Python Program to Find Min & Max Element in BST Python Program to Find Minimum and Maximum Element in Binary Search Tree
Check if a Tree is BST in Python Python Program to Check if a Tree is Binary Search Tree

## 3. Python Programs on Tree

Program Description
Create Tree in Python Python Program to Construct a Tree and Perform Tree Operations
Binomial Tree in Python Python Program to Implement Binomial Tree
Boundary Traversal of Binary Tree in Python Python Program to Print Boundary Traversal of Binary Tree

## 4. Python Programs on Nodes of a Tree

Program Description
Sum of all Nodes in a Tree in Python Python Program to Find the Sum of All Nodes in a Tree
Python Program to Count Leaf Nodes in a Tree Python Program to Count Leaf Nodes in a Tree
Python Program to Count Non-Leaf Nodes in a Tree Python Program to Count Non Leaf Nodes in a Tree
Print all Paths from Root to Leaf in a Tree in Python Python Program to Print All Paths from Root to Leaf in a Tree
Print Left View of a Tree in Python Python Program to Print Left View of a Tree

## 5. Python Programs on BFS and DFS Traversals

Program Description
DFS Tree Traversal using Recursion in Python Python Program for Depth First Binary Tree Search using Recursion
DFS Tree Traversal without Recursion in Python Python Program for Depth First Binary Tree Search without using Recursion
DFS Traversal using Post Order in Python Python Program to Implement Depth First Search Traversal using Post Order
Display Tree Nodes using BFS Traversal in Python Python Program to Display Tree Nodes using BFS Traversal
Mirror Tree using BFS Traversal in Python Python Program to Create a Mirror Copy of a Tree and Display using BFS Traversal

## 6. Python Programs on Tree Traversals

Program Description
Find Nth Node of Inorder Traversal in Python Python Program to Find Nth Node of Inorder Traversal
Find Max Value in Tree using Inorder Traversal in Python Python Program to Find Maximum Value in Tree using Inorder Traversal
Construct Binary Tree from Postorder & Inorder in Python Python Program to Construct Binary Tree from Postorder and Inorder
BST Deletion & Inorder Traversal in Python Python Program to Construct a Binary Search Tree and Perform Deletion and Inorder Traversal