Passing a string in Python as a variable to render template in Flask
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Flask is a web framework for Python that allows you to build web applications easily. When working with Flask, you often need to pass data from your Python code to the HTML templates to dynamically generate content. In this tutorial, we'll focus on passing a string as a variable to the render_template() function in Flask.
Before you start, make sure you have Flask installed. You can install it using the following command:
Let's create a simple Flask application to demonstrate passing a string variable to the template.
Create a new Python file, e.g., app.py.
Open app.py and import the necessary modules:
Here, we're defining a route at the root URL ('/'). Inside the route function (index()), we create a variable message and pass it to the render_template() function.
Create a folder named templates in the same directory as your app.py file. Inside the templates folder, create a new file named index.html.
Open index.html and use the variable passed from the Python code:
Here, {{ message }} is a placeholder that will be replaced with the value of the message variable from Python.
Save your changes and run the Flask app:
Visit http://127.0.0.1:5000/ in your web browser, and you should see the message "Hello, Flask!" displayed on the page.
Congratulations! You've successfully passed a string variable from your Python code to a Flask template. This is a fundamental concept when working with dynamic content in web applications.
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