How do I get this current_time variable to update when the webpage is reloaded in Flask?
from flask import Flask, render_template
app=Flask(__name__)
import time
from datetime import datetime
from apscheduler.schedulers.background import BackgroundScheduler
current_time = 000
sched = BackgroundScheduler()
def job1():
print('this prints 5 sec')
now = datetime.now()
current_time = now.strftime("%d/%m/%Y %H:%M:%S")
@app.route('/')
def home():
return render_template('home.html', current_time=current_time)
if __name__ == '__main__':
sched.add_job(id='job1', func=job1, trigger = 'interval', seconds=5)
sched.start()
app.run(host='0.0.0.0')
app.run(debug=True, use_reloader=False)
When I run this, the 'this prints 5 seconds' part works in the terminal, but the {{current_time}} does not update on the web page when it is reloaded. Just stays "0"
(I know there are other ways to get the current time on a web page, this is just a simplified example where i want to regularly update variables then have them updated on the html page when the page is loaded.)
To update the current_time variable, you need to update it within the job1() / home() function. Accessing it via the global variable should work：
def home():
global current_time
...
def job1():
global current_time
...