flask_socketio import wont work, error: No module named flask_socketio

Question

Im trying to create connection between flask socketio and react native socketio, I have already prepared client side with react native socketio BUT I have run into problem with importing flask_socketio in rpi. Im trying to use simplest implementation possible, this is my code:

from flask import Flask
from flask_socketio import SocketIO, emit
 
app = Flask(__name__)
 
@app.route('/', methods=['GET'])
def hello_world():
    return "Hello World"
 
if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5005)

Without line 2 it works perfectly but I need to use flask_socketio. here is photo too(first run is without importing flask_socketio, than I tried to import it and it wont work. I have tried reinstalling flask_socketio twice, rebooting but nothing works:/:

score 4 · Accepted Answer · edited Jul 21 '21 at 11:52

4

Problem was that I was installing it with sudo python pip install flask_socketio, BUT I had to use python3, so right installation is python3 -m pip install flask_socketio

edited Jul 21 '21 at 11:52

Tomerikoo

18,379
16
47
61

answered Oct 27 '20 at 19:03

ersi

207
1
2
11

score 1 · Answer 2 · edited Jul 21 '21 at 11:51

1

You need to go to cmd prompt and use:

sudo -H pip3 install flask-socketio

edited Jul 21 '21 at 11:51

Tomerikoo

18,379
16
47
61

answered Jul 21 '21 at 11:48

Marcus

11
1

score -1 · Answer 3 · edited Jun 08 '21 at 12:24

-1

This might resolve your problem

socketio = SocketIO(app, cors_allowed_origins="*")

this will work on any version of socketio

edited Jun 08 '21 at 12:24

jhoepken

1,842
3
17
24

answered Jun 07 '21 at 23:13

Hedi Mzah

21
2

flask_socketio import wont work, error: No module named flask_socketio

3 Answers3