Flask | How to iterate data (Part 1) introduction and set up
In this article, we will learn how to iterate data in a Flask application. Iterating data is a common task in web development, especially when you are working with lists or dictionaries. This can be used to display data from a database, API, or any other data source.
Set up Flask
Before we can start iterating data in a Flask application, we need to set up Flask. If you haven’t already installed Flask, you can do so by running the following command in your terminal:
pip install Flask
Once Flask is installed, you can create a new Flask application by creating a new Python file (e.g. app.py) and adding the following code:
from flask import Flask
app = Flask(__name__)
@app.route('/')
def index():
data = ['Apple', 'Banana', 'Orange']
return render_template('index.html', data=data)
if __name__ == '__main__':
app.run()
In the code above, we are creating a new Flask application and defining a route to the homepage (‘/’). We are also creating a list called ‘data’ with some example data (‘Apple’, ‘Banana’, ‘Orange’). We are passing this data to a template called ‘index.html’ using the ‘render_template’ function.
In the next part of this series, we will learn how to iterate over this data in the ‘index.html’ template using Jinja templating. Stay tuned!
