Is it possible to run Web Server using Flask microframework simultaneously with a loop?

Question

I try to create a Web Server using Flask and I want to add an infinite loop just like this:

from flask import Flask
app = Flask(__name__)

@app.route("/")
def main():
   return "This is my website". 

if __name__ == "__main__":
   app.run()
   while True:
       print("Hello World")

but when I run the program, string "Hello World" is never printed, is there a solution for this ? Thanks

Can you try putting `app = Flask(__name__)` and `@app.route("/")` inside the `def main():`? — Sheldore, Oct 02 '18 at 14:09

score 1 · Answer 1 · answered Oct 02 '18 at 14:15

1

That is to be expected, since app.run() is an infinite loop via werkzeug(which is a WSGI utility library that is used by flask). So the simple answer is no, it is not possible under those circumstances. What you'll need to do is use something like multiprocessing or threading

answered Oct 02 '18 at 14:15

Alexander Ejbekov

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what is the main difference between multiprocessing and threading ? – Quốc Hưng Hoàng Oct 03 '18 at 08:31
[This](https://stackoverflow.com/questions/3044580/multiprocessing-vs-threading-python) should answer that one. – Alexander Ejbekov Oct 03 '18 at 09:14

Is it possible to run Web Server using Flask microframework simultaneously with a loop?

1 Answers1