README

Python Code Explanation

This repository contains three Python programs demonstrating recursion, list comprehensions, and the use of defaultdict from the collections module.

1. Recursive Power Function

File: power_function.py This script calculates the power of a number using recursion.

• The function power(a, b) recursively calculates a^b.
• The base condition is when b == 0, returning 1.
• The user inputs values for a and b, and the result is displayed.

Example Input & Output:

Enter base (a): 6 Enter exponent (b): 5 6 to the power of 5 is 7776

---

2. List of Squares

File: squares_list.py This script generates and prints the squares of numbers from 1 to 30 using list comprehension.

• The function squares_list() generates the list [x**2 for x in range(1, 31)].
• The list is then printed to the console.

Example Output:

[1, 4, 9, 16, 25, 36, 49, ..., 841, 900]

---

3. Dictionary with Sets (defaultdict)

File: defaultdict_example.py This script demonstrates the use of defaultdict to group values under specific keys.

• The function create_dict(keys, values) creates a dictionary where each key maps to a set of values.
• defaultdict(set) is used to automatically initialize missing keys with empty sets.

Example Input & Output: python keys = ['Class-V', 'Class-VI', 'Class-VII', 'Class-VIII'] values = [1, 2, 2, 3] output_dict = create_dict(keys, values) print(output_dict)

Output:

defaultdict(<class 'set'>, {'Class-V': {1}, 'Class-VI': {2}, 'Class-VII': {2}, 'Class-VIII': {3}})

---

How to Run

1. Ensure you have Python installed (>= 3.x).

2. Run each script using: sh python filename.py

3. Follow the prompts or review the printed output.

---

Dependencies

No external dependencies are required; these scripts use Python's built-in functionalities.

---

License

This project is licensed under the MIT License.

---

Author

Kota Charan Kumar Reddy Happy Coding! 🚀