Flask UnicodeDecodeError

Question

Error:

UnicodeDecodeError: 'ascii' codec can't decode byte 0xf0 in position 24: ordinal not in range(128)

So basically I have a Flask app where users fill a sign up form and it renders a new page.

Here's the code:

render_template('signUpSuccess.html', password="You should know, right? 😛")

It's not a serious project just a practice app I'm creating since I'm learning Python. I'm positive it's because of the emoji. I've tried other SO questions but just can't figure it out. I know the emoji is not necessary but It'd be nice to know how I can fix this in the future.

Are you using Python2 or Python3?

Robᵩ
– Robᵩ

2016-07-21 04:27:56 +00:00
Commented Jul 21, 2016 at 4:27 — Robᵩ
– Robᵩ, Commented Jul 21, 2016 at 4:27

Robᵩ · Accepted Answer · 2016-07-21 04:25:17Z

1

Try passing a unicode object, not a str into render_template(), like so:

render_template('signUpSuccess.html', password=u"You should know, right? 😛")

Sample program:

# coding: utf-8
from flask import Flask, render_template

app = Flask(__name__)

@app.route('/')
def root():
    return render_template('signUpSuccess.html', password=u"You should know, right? 😛")

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

template:

<html>password: {{ password }}</html>

answered Jul 21, 2016 at 4:25

Robᵩ

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1 Comment

Rigo Over a year ago

This fixed it. Thanks!

Fernando Irarrázaval G · Accepted Answer · 2016-07-21 04:26:52Z

0

You should decode that string. Try this:

the_password = "You should know, right? 😛"
the_password = the_password.decode('utf-8')

render_template('signUpSuccess.html', password=the_password)

answered Jul 21, 2016 at 4:26

Fernando Irarrázaval G

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