New Python Program: Number Guessing Game

按照 issue 中的说明创建 number_guessing_game.py。首先查看列出的游戏要求，并手动使用正确、过高、过低和无效的输入运行程序。当游戏从指定范围内选择一个数字、限制尝试次数、给出明确反馈并处理无效输入时，即完成。

Hello Python enthusiasts! Let's add some fun to our repository with a classic Number Guessing Game implemented in Python. This beginner-friendly task involves creating a Python program where the computer randomly selects a number, and the user has to guess it within a limited number of attempts. This game will demonstrate basic random number generation, input handling, and conditional statements.

Tasks:

• Generate a random number between a specified range (e.g., 1 to 100).
• Allow the user a limited number of attempts to guess the number correctly.
• Provide feedback to the user if their guess is too high, too low, or correct.
• Display a victory message if the user guesses the number within the allowed attempts.
• Implement error handling for invalid inputs.

Guidelines:

• Use Python 3.x for the program.
• Ensure the game provides clear instructions and feedback to the user.
• Include comments in your code to explain the logic and functionality.
• Test the game with various scenarios to ensure it works as expected.

Example:

Welcome to the Number Guessing Game!

I'm thinking of a number between 1 and 100.
You have 7 attempts to guess it.

Enter your guess: 50
Too high! You have 6 attempts left.

Enter your guess: 30
Too low! You have 5 attempts left.

Enter your guess: 40
Correct! Congratulations, you guessed the number in 3 attempts!

How to Contribute:

1. Fork this repository.
2. Create a new Python file for the Number Guessing Game: number_guessing_game.py.
3. Write the Python program following the specified tasks and guidelines.
4. Test the game thoroughly to ensure it functions correctly.
5. Commit your changes: git commit -m "Add Number Guessing Game program"
6. Push to your branch: git push origin add-number-guessing-game
7. Open a pull request to this repository.

Your contribution will bring joy to users playing this classic game. Thank you for creating this entertaining Python program for our repository!