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import queue
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from flask import Flask , render_template , request , make_response , session
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from flask_socketio import SocketIO , join_room , leave_room #https://pythonprogramminglanguage.com/python-flask-websocket/
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from flask_session import Session
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import sqlite3
import time
import atexit
import sys
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import uuid
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db_path = ' mate.db '
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conn = sqlite3 . connect ( db_path , check_same_thread = False )
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c = conn . cursor ( )
app = Flask ( __name__ )
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key = str ( uuid . uuid4 ( ) . hex )
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app . config [ ' SESSION_TYPE ' ] = ' filesystem '
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print ( key )
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app . config [ ' SECRET_KEY ' ] = key
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Session ( app )
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socketio = SocketIO ( app )
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status = True
users = queue . Queue ( )
finished = None
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message = None
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def exit_handler ( ) :
conn . close ( )
sys . exit ( " Program sucsesfully exited " )
#website
@app.route ( " / " )
def index ( ) :
return ' <a href= " /list " >user and tag list</a> <p>The creator of this website accepts no liability for any linguistic or technical errors!</p> '
@app.route ( " /list " )
def list ( ) :
c . execute ( " SELECT * FROM users " )
users = c . fetchall ( )
text = " "
for i in users :
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text = text + f ' <p><a href= " list/user?user= { i [ 1 ] } " > { i [ 1 ] } </a>: { i [ 2 ] } <form action= " /change " method= " get " ><input name= " id " type= " hidden " value= " { i [ 0 ] } " > Change balance: <input name= " change " ><input type= " submit " ></form></p> <br style= " line-height: 50%; " ></br> '
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return ''' <!DOCTYPE html>
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< html lang = " en " >
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< script src = " https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js " integrity = " sha512-q/dWJ3kcmjBLU4Qc47E4A9kTB4m3wuTY7vkFJDTZKjTs8jhyGQnaUrxa0Ytd0ssMZhbNua9hE+E7Qv1j+DyZwA== " crossorigin = " anonymous " > < / script >
< script type = " text/javascript " charset = " utf-8 " >
var socket = io ( ) ;
socket . on ( " update " , function ( ) {
window . location = " http://matekasse.server.c3h/list "
} ) ;
< / script >
< form action = " /list/user " method = " get " > Search for User : < input name = " user " > < input type = " submit " > < / form >
< form action = " /adduser " method = " get " > < button type = " submit " > Add User < / button > < / form >
< br > < / br >
''' + text + ' </html> '
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@app.route ( " /list/user " , methods = [ ' GET ' ] )
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def user_info ( ) :
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username = request . args . get ( " user " )
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c . execute ( " SELECT * FROM users WHERE username = ' %s ' " % username )
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user_list = c . fetchall ( )
if user_list != [ ] :
user = user_list [ 0 ]
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c . execute ( f " SELECT * FROM tags WHERE userid= { user [ 0 ] } " )
tags = c . fetchall ( )
text = " "
for tag in tags :
text = text + f " <p> { tag [ 0 ] } </p> "
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return f """ <!DOCTYPE html>
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< html lang = " en " >
< script src = " https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js " integrity = " sha512-q/dWJ3kcmjBLU4Qc47E4A9kTB4m3wuTY7vkFJDTZKjTs8jhyGQnaUrxa0Ytd0ssMZhbNua9hE+E7Qv1j+DyZwA== " crossorigin = " anonymous " > < / script >
< script type = " text/javascript " charset = " utf-8 " >
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var socket = io ( ) ;
""" + ' socket.on( " update " , function() { window.location= " http://matekasse.server.c3h/list/user?user= ' + username + ' " }); ' + f """
< / script >
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< p > { user [ 1 ] } : { user [ 2 ] } < p >
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< form action = " /addtag " method = " get " > < input name = " id " type = " hidden " value = " {user[0]} " > < button type = " submit " > Add Tag < / button > < / form >
< form action = " /removetag " method = " get " > < input name = " id " type = " hidden " value = " {user[0]} " > < button type = " submit " > Remove Tag < / button > < / form >
< / p > < form action = " /change " method = " get " > < input name = " id " type = " hidden " value = " {user[0]} " > Change balance : < input name = " change " > < input type = " submit " > < / form >
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< / p >
< br > < / br >
< p > Tags : < / p >
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{ text }
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< br > < / br >
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< form action = " /removeuser/confirmation " method = " get " > < input name = " id " type = " hidden " value = " {user[0]} " > < button type = " submit " > Remove User < / button > < / form >
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< / html >
"""
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else :
return " User does not exists "
@app.route ( " /adduser " )
def new_user ( ) :
return render_template ( " adduser.html " )
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@app.route ( " /removeuser/confirmation " , methods = [ ' GET ' ] )
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def confirm_remove_user ( ) :
user_id = request . args . get ( " id " )
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return f ' Do your realy want to <a href= " /removeuser?id= { user_id } " >remove the user</a> '
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@app.route ( " /removeuser " , methods = [ ' GET ' ] )
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def remove_user ( ) :
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user_id = request . args . get ( " id " )
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c . execute ( f " SELECT * FROM users WHERE id= { user_id } " )
user_name = c . fetchall ( ) [ 0 ] [ 1 ]
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c . execute ( f " DELETE FROM tags WHERE userid= { user_id } " )
c . execute ( f " DELETE FROM users WHERE id= { user_id } " )
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conn . commit ( )
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return f ' <p>Deleted user { user_name } </p><a href= " /list " >return to the tags and user list</a> '
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@app.route ( " /adduser/user " , methods = [ ' GET ' ] )
def adduser ( ) :
user = request . args . get ( " username " )
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c . execute ( f " SELECT * FROM users WHERE username= ' { str ( user ) } ' " )
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if c . fetchall ( ) == [ ] :
c . execute ( " INSERT or IGNORE INTO users (username, balance) VALUES ( ' %s ' , 0) " % user )
conn . commit ( )
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return ' Added user <a href= " /list " >user and tag list</a> <p>The creator of this website accepts no liability for any linguistic or technical errors!</p> '
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else :
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return ' User already exists <a href= " /list " >user and tag list</a> <p>The creator of this website accepts no liability for any linguistic or technical errors!</p> '
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@app.route ( " /change " , methods = [ ' GET ' ] )
def change ( ) :
user_id = int ( request . args . get ( " id " ) )
try :
change = int ( request . args . get ( " change " ) )
except ValueError :
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return ' <p>Please enter a number!</p><a href= " /list " >tags and user list</a> '
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c . execute ( f " UPDATE users SET balance = balance + { change } WHERE id= { user_id } " )
conn . commit ( )
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if change < 0 :
text = " removed from "
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change_text = change * - 1
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elif change > 0 :
text = " added to "
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change_text = change
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elif change == 0 :
return " <p>Nothing was done!</p> "
c . execute ( f " SELECT * FROM users WHERE id= { user_id } " )
user = c . fetchall ( ) [ 0 ] [ 1 ]
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return f ' <p> { change_text } was { text } { user } </p> <a href= " /list " >back to the list</a> '
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@app.route ( " /addtag " , methods = [ ' GET ' ] )
def get_addtag_request ( ) :
global users
try :
user_id = int ( request . args . get ( " id " ) )
except : #except im Normalen Code!
return " Wrong user id! "
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session_id = uuid . uuid4 ( )
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session [ id ] = session_id
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users . put ( [ user_id , " add " , session_id ] )
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return render_template ( " addtag.html " , user = user_id )
@socketio.on ( ' addtag ' )
def request_addtag ( data ) :
global finished
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global message
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join_room ( session [ id ] )
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if len ( users . queue ) > 0 :
user = users . queue [ len ( users . queue ) - 1 ]
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if user == [ data [ " data " ] , " add " , session [ id ] ] :
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socketio . emit ( " wait " , " wait " , to = session [ id ] )
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i = 0
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while finished != [ data [ " data " ] , " add " , session [ id ] ] :
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time . sleep ( 1 )
i + = 1
if i > 20 :
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socketio . emit ( " error " , " timeout " , to = session [ id ] )
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notimportant = users . get ( )
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break
else :
finished = None
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c . execute ( f " SELECT * FROM users WHERE id = { user [ 0 ] } " )
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username = c . fetchall ( ) [ 0 ] [ 1 ]
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if message == " Tag already exists " :
socketio . emit ( " finished " , f " { message } " )
else :
socketio . emit ( " finished " , f " Added { message } to { username } " , to = session [ id ] ) #print tagid
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else :
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socketio . emit ( " busy " , " busy " , to = session [ id ] )
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else :
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socketio . emit ( " error " , " error " , to = session [ id ] )
leave_room ( session [ id ] )
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@app.route ( " /removetag " , methods = [ ' GET ' ] )
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def get_removetag_request ( ) :
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global users
try :
user_id = int ( request . args . get ( " id " ) )
except : #except im Normalen Code!
return " Wrong user id! "
session_id = uuid . uuid4 ( )
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session [ id ] = session_id
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users . put ( [ user_id , " remove " , session_id ] )
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return render_template ( " removetag.html " , user = user_id )
@socketio.on ( ' removetag ' )
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def request_removetag ( data ) :
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global finished
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global message
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join_room ( session [ id ] )
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if len ( users . queue ) > 0 :
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queue_item = users . queue [ len ( users . queue ) - 1 ]
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user = queue_item [ 0 ]
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if queue_item == [ data [ " data " ] , " remove " , session [ id ] ] :
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socketio . emit ( " wait " , " wait " , to = session [ id ] )
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i = 0
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print ( session [ id ] )
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while finished != [ data [ " data " ] , " remove " , session [ id ] ] :
time . sleep ( 1 )
i + = 1
if i > 20 :
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socketio . emit ( " error " , " timeout " , to = session [ id ] )
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notimportant = users . get ( )
break
else :
finished = None
c . execute ( f " SELECT * FROM users WHERE id = { user } " )
username = c . fetchall ( ) [ 0 ] [ 1 ]
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if message == " Tag does not exist " :
socketio . emit ( " finished " , f " { message } " )
else :
socketio . emit ( " finished " , f " removed { message } from { username } " )
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else :
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socketio . emit ( " busy " , " busy " , to = session [ id ] )
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else :
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socketio . emit ( " error " , " error " , to = session [ id ] )
leave_room ( session [ id ] )
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#api
@app.route ( " /api/tag_id " , methods = [ ' GET ' ] )
def get_id ( ) :
global finished
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global message
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tag_id = int ( request . args . get ( " id " ) )
c . execute ( f " SELECT * FROM tags WHERE tagid = { tag_id } " )
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tag_list = c . fetchall ( )
if users . qsize ( ) > 0 :
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queue_item = users . get ( )
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print ( queue_item )
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user = queue_item [ 0 ]
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print ( f " user: { user } " )
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state = queue_item [ 1 ]
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print ( state )
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if state == " add " :
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c . execute ( f " SELECT * FROM tags WHERE tagid= { tag_id } " )
if c . fetchall ( ) != [ ] :
message = " Tag already exists "
else :
c . execute ( f " INSERT OR IGNORE INTO tags (tagid, userid) VALUES ( { tag_id } , { user } ) " )
message = tag_id
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elif state == " remove " :
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c . execute ( f " SELECT * FROM tags WHERE (tagid = { tag_id } AND userid = { user } ) " )
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tags = c . fetchall ( )
print ( f " tags: { tags } " )
if tags != [ ] :
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c . execute ( f " DELETE FROM tags WHERE (tagid = { tag_id } AND userid = { user } ) " )
message = tag_id
else :
message = " Tag does not exist "
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conn . commit ( )
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finished = queue_item
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socketio . emit ( " update " , " update " )
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return make_response ( " True " )
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elif tag_list != [ ] :
tag = tag_list [ 0 ]
if users . qsize ( ) == 0 :
c . execute ( f " UPDATE users SET balance = balance - 1 WHERE id= { tag [ 1 ] } " )
conn . commit ( )
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socketio . emit ( " update " , " update " )
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return make_response ( " True " )
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socketio . emit ( " update " , " update " )
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return make_response ( " False " )
def main ( ) :
atexit . register ( exit_handler )
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socketio . run ( app , host = ' 0.0.0.0 ' , port = 5000 )