How to change the port number in python flask?

@diana_barrows use environment variables to change the port number or host in python flask:

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export FLASK_RUN_HOST=127.0.0.1
export FLASK_RUN_PORT=3005

@diana_barrows 

In Flask, you can change the port number by passing the port parameter when running the application using the run() method. Here's an example:

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from flask import Flask

app = Flask(__name__)

@app.route('/')
def home():
    return 'Hello, World!'

if __name__ == '__main__':
    app.run(port=5001)  # change the port number to 5001

By running this script, the Flask application will start on port 5001 instead of the default port 5000.