Hi guys I'm getting error while trying to run Flask code. I'm doing a course from Udemy (the-python-mega-course):
posting code and error below:
Code:
from flask import Flask, render_template
app=Flask(__name__)
@app.route('/')
def home():
return render_template("home.html")
@app.route('/about/')
def about():
return render_template("about.html")
if __name__=="__main__":
app.run(port=5000, debug=True)
Error:
* Restarting with stat
An exception has occurred, use %tb to see the full traceback.
SystemExit: 1
C:\Users\Vineet\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py:2889: UserWarning: To exit: use 'exit', 'quit', or Ctrl-D.
warn("To exit: use 'exit', 'quit', or Ctrl-D.", stacklevel=1)
Complete Traceback:
File "", line 11, in
app.run(host='127.0.0.1', port=5000, debug=True)
File "C:\Users\Vineet\Anaconda3\lib\site-packages\flask\app.py", line 841, in run
del _get_debug, _set_debug
File "C:\Users\Vineet\Anaconda3\lib\site-packages\werkzeug\serving.py", line 737, in run_simple
serving.
File "C:\Users\Vineet\Anaconda3\lib\site-packages\werkzeug_reloader.py", line 265, in run_with_reloader
import signal
SystemExit: 1
As I'm totally new to Flask framework any help appreciated.
Regards
Best Answer
According to flask documentation the best way to start the server is using environment variables as follows and to use debug mode you can set
FLASK_ENV
variable todevelopment
. Therefore the final part of your code withif __name__=="__main__": app.run(port=5000, debug=True)
is not a must to use if you use this method.