Add Age Calculator Python project

Author: Shailaja-poojari

hello-world/README.md

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+# Hello World in Python 
+
+This is a simple beginner-friendly Python project that prints a personalized "Hello, World" message.
+
+##  File: `hello.py`
+
+This script asks for the user's name and prints a greeting.
+
+###  How it works:
+- Takes input from the user
+- Uses a function `say_hello(name)` to return a greeting message
+- Prints the final message
+
+###  To run:
+```bash
+python hello.py
+
+Example Output:
+Enter your name: Shailaja
+Hello, Shailaja! Welcome to the world of open source.
+
+
+🌟 Who is this for?
+Perfect for first-time contributors to practice creating a Python script and contributing to open-source.
+
+
+Contribution Steps:
+
+Fork the repo
+Clone to your system
+Create a branch
+Add your project
+Commit and push
+Create a Pull Request (PR)

hello-world/hello.py

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+def say_hello(name):
+    return f"Hello, {name}! Welcome to the world of open source."
+
+# Example usage
+if __name__ == "__main__":
+    user_name = input("Enter your name: ")
+    print(say_hello(user_name))