Python Flask Show Client IP

flask-client-ip.py

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/ip', methods=['GET'])
def name():
    return request.environ.get('HTTP_X_REAL_IP', request.remote_addr)
    #return jsonify({'ip': request.remote_addr}), 200
    #return jsonify({'ip': request.environ['REMOTE_ADDR']}), 200

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=80)

this is return the localhost ip, how to get the public ip with flask?

Perhaps you were running this in development....if you put it on a server (like gunicorn) ... it should return the ip of the client

and how i can change it?

Clearly the IP is the one sent with the HTTP request, there are no other IPs as far as Flask is concerned.
https://werkzeug.palletsprojects.com/en/0.15.x/wrappers/#werkzeug.wrappers.BaseRequest.remote_addr