35 python programming exercises and solutions

Okay, here's a comprehensive guide covering 35 Python programming exercises, complete with detailed explanations, code examples, and alternative solutions where applicable. I've structured it to cover a range of difficulty levels and programming concepts.

**Important:** Run each code snippet in your Python environment to understand how it works!
**Content Table**
1. Basic Input/Output and Variables
2. Arithmetic Operations
3. Conditional Statements
4. Loops
5. Strings
6. Lists
7. Dictionaries
8. Functions
9. File Handling
10. Basic Data Structures and Algorithms
11. Object Oriented Programming
12. Working with Modules
**1. Basic Input/Output and Variables**

**Exercise 1: Hello, World!**

* **Problem:** Write a program that prints "Hello, World!" to the console.

* **Solution:**

* **Explanation:** The `print()` function displays the specified text on the screen.

**Exercise 2: Getting User Input**

* **Problem:** Ask the user for their name and then print a personalized greeting.

* **Solution:**

* **Explanation:** The `input()` function reads a line of text entered by the user. The result is stored in the `name` variable. We then use string concatenation (`+`) or an f-string (cleaner) to create the personalized greeting.

**Exercise 3: Simple Calculation**

* **Problem:** Ask the user for two numbers and print their sum.

* **Solution:**

* **Explanation:** We use `input()` to get the numbers as strings. `int()` or `float()` converts the string input to numerical values so we can perform addition. `float()` allows for decimal inputs.

**2. Arithmetic Operations**

**Exercise 4: Area of a Rectangle**

* **Problem:** Calculate the area of a rectangle given its length and width.

* **Solution:**

**Exercise 5: Temperature Conversion**

* **Problem:** Convert Celsius to Fahrenheit.

* **Solution:**

**Exercise 6: Simple Interest Calculation**

* **Problem:** Calculate simple interest given principal, rate, and time ...

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