Flask render_template

Question

New to Flask and have some experience with python, when using render_template it simply does not render the template as well as not giving out any errors. Code Here:

from flask import Flask, render_template

app = Flask(__name__, template_folder= "/templates")




@app.route("/")
def index():
        #return("Index str")
    return render_template("index.html")


@app.route("/crawler")
def crawler():
    return("WebCrawler str")
    return render_template("crawler.html")

if __name__ == "__main__":
    app.run()
    app.debug = True

HTML here (pretty certain file hierarchy is correct).

<!DOCTYPE html>

<html lang="en">
    <head>
        <link rel="stylesheet" type="text/css" href="{{url_for('static', filename='style.css')}}">
        <meta charset = "utf-8">
        <title> Index</title>
    <head>
    <body>
        <p> This webserver hosts all webapps and will showcase any unfinished applications.
            </p>

        </body>

</html>

score 5 · Accepted Answer · answered Jun 17 '17 at 18:27

5

The default folder for the HTML files is templates. So create a folder called "templates" where your python file is located. Put any HTML files in that folder

answered Jun 17 '17 at 18:27

Ash Pereira

152
1
13

The last screenshot shows a templates folder within the same folder that main.py is located. – Hobnob Jun 17 '17 at 18:41
Have you been trying to access the site through localhost? If so then you need to import os and have this code: `if __name__ == '__main__': port = int(os.environ.get('PORT', 5000)) app.run(host='0.0.0.0', port=port)` – Ash Pereira Jun 17 '17 at 19:04
Indeed I have, never thought of that, Ill just test that now. – Hobnob Jun 17 '17 at 19:09
Thankyou, it was this afterall, are you able to explain why this is the case? Sorry new to web development. – Hobnob Jun 17 '17 at 19:12
I'm not a huge technical guy so I'm not sure of the exact way to describe it. But basically you need to tell the program to host the site at port 5000 on your local computer. That way when you go to http://localhost:5000, your site appears there – Ash Pereira Jun 19 '17 at 13:08

score 2 · Answer 2 · answered Jun 17 '17 at 18:24

2

By default Flask template_folder set to templates. If you wish to change it then mention folder in the root path of the application.

It't not necessary when templates folder but it's should be...

app = Flask(__name__, template_folder= "templates")

answered Jun 17 '17 at 18:24

Raja Simon

10,126
5
43
74

I have tried leaving it to default however this didn't work either, I could show screenshots of the filing if you need? – Hobnob Jun 17 '17 at 18:28
@Hobnob That would be nice. Please update your question with filing screenshot... – Raja Simon Jun 17 '17 at 18:28
Can you put `app.debug = True` above the `app.run()` statement. It will give you better error messages... – Raja Simon Jun 17 '17 at 18:47
Just sorted it out, to do with being on localhost, cheers anyway. – Hobnob Jun 17 '17 at 19:17

score 0 · Answer 3 · answered May 30 '21 at 11:13

0

from flask import Flask, render_template

app = Flask(__name__, template_folder= "templates")
@app.route("/")
def index():
    return render_template('/index.html')

This code might work..

answered May 30 '21 at 11:13

Satyam Srivastava

1

Flask render_template

3 Answers3

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