<s>[INST] Write a Hello-World application in python. [/INST] Certainly! Here is a simple Hello-World application in Python:

```python
print("Hello, world!")```

When you run this program, it will output the text "Hello, world!" to the console. This is a very basic program, but it is a common first example when learning a new programming language.

If you want to get more advanced, you can modify the code to include user input or output, variables, loops, and more. But this simple Hello-World program is a great way to start getting familiar with Python!</s>\ <s>[INST] Thanks.  What's a good website with a test environment I can input this code into? [/INST] W3Schools is a freemium educational website for learning coding online. You can search for a Python Online Compiler there.

You should also check out their tutorials if you want to get more advanced.</s>