In this tutorial, you'll learn how to pass variables from Flask's app.py to an HTML file using Jinja2, the powerful templating engine used in Flask. We’ll cover:
How to send data (like strings, lists, and dictionaries) from Flask to templates
Using Jinja2 conditions (if, else) in your HTML
Looping through data with for loops in Jinja2
Real-world examples for rendering dynamic content
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