In this lesson, you'll learn how to use templates in Flask to create dynamic HTML pages. Templates allow you to separate your Python code from the HTML structure, making your web apps more organised and easier to maintain. You'll build on your knowledge from the previous lesson by adding templates to a Flask application. Here's what you'll do:

1. Set up a new project folder and environment for this lesson.
2. Create a basic Flask app.
3. Introduce Jinja2 templates for rendering dynamic content.
4. Pass data from Python to HTML templates.
5. Use template features like variables and loops for dynamic HTML.

By the end, you'll understand how to generate dynamic web pages using Flask templates.

To start, create a dedicated folder for this lesson's project. This will keep your files organised.

1. On your computer, create a new folder named 'FlaskTemplates'. You can place it in your Documents folder or any preferred location.
2. Open VS Code and go to File > Open Folder, then select the 'FlaskTemplates' folder.
3. This sets 'FlaskTemplates' as your workspace for this lesson.

Create a virtual environment to isolate your project's dependencies.

1. Open the Command Palette: View > Command Palette.
2. Type 'Python: Create Environment' and select it.
3. Choose 'Venv' as the type.
4. Select your installed Python version.
5. VS Code will create a '.venv' folder in 'FlaskTemplates'.

Now, open a terminal in VS Code to run commands for setting up your environment.

1. Go to the menu: View > Terminal.
2. This opens the Terminal panel at the bottom of VS Code.
3. In the terminal, run: pip install flask
4. Wait for the installation to complete.

Let's create a simple Flask app that we will build upon as we go through the lesson.

In VS Code, create a file named 'app.py' in 'FlaskTemplates'.

Add the following code:

from flask import Flask
app = Flask(__name__)

@app.route('/')
def home():
    return 'Welcome to Flask Templates Lesson!'