How to display a variable in HTML

Question

I am making a web app using Python and have a variable that I want to display on an HTML page. How can I go about doing so? Would using {% VariableName %} in the HTML page be the right approach to this?

Could you be more specific on how you are using python with your web app? Are you using Django? — Robert Pounder
– Robert Pounder, Commented Aug 12, 2015 at 12:43
you sure your question is not already answered thousands of times and googling for it is of no use? — Marcin Orlowski
– Marcin Orlowski, Commented Aug 12, 2015 at 12:44
@RobertPounder I am using Flask. Have information on an API saved as a variable and wish to display this on a HTML page — Ricky92d
– Ricky92d, Commented Aug 12, 2015 at 12:46
That would certainly be the right approach if you were using a templating language that supported it and passing VariableName to the template... but are you? Could you give a minimal reproducible example? Why not just try it and see? — jonrsharpe
– jonrsharpe, Commented Aug 12, 2015 at 12:46
{{variablename}} Should work. stackoverflow.com/questions/14975114/… — Robert Pounder
– Robert Pounder, Commented Aug 12, 2015 at 12:50

mhawke · Accepted Answer · 2015-08-12 13:22:25Z

38

This is very clearly explained in the Flask documentation so I recommend that you read it for a full understanding, but here is a very simple example of rendering template variables.

HTML template file stored in templates/index.html:

<html>
<body>
    <p>Here is my variable: {{ variable }}</p>
</body>
</html>

And the simple Flask app:

from flask import Flask, render_template

app = Flask('testapp')

@app.route('/')
def index():
    return render_template('index.html', variable='12345')

if __name__ == '__main__':
    app.run()

Run this script and visit http://127.0.0.1:5000/ in your browser. You should see the value of variable rendered as 12345

answered Aug 12, 2015 at 13:22

mhawke

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1 Comment

Tommy Over a year ago

thanks! but what if my variable is declared into a class?

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