wechat id for you

• hint: python format

wechat id for you is here

import html
import secrets

from flask import Flask, Response, request

from flag import FLAG, GIFT

app = Flask(__name__)


def read(filename, encoding='utf-8'):
    with open(filename, 'r', encoding=encoding) as fin:
        return fin.read()


@app.route('/', methods=['GET'])
def index():
    guess = request.args.get('guess')

    if not guess:
        return Response(read(__file__), mimetype='text/plain')

    if guess == secrets.token_hex(16):
        return 'Nice guess! Your flag is {}'.format(FLAG)
    elif guess == "giveup":
        return 'Give up is OK, sweet gift for you: {}'.format(GIFT)

    fs = ('Better luck next time!<br/>'
            'Your IP: {r.remote_addr}<br/>'
            'Your User Agent: {r.user_agent}<br/>'
            'Your Guess: ' + html.escape(guess))
    return fs.format(r=request)


if __name__ == '__main__':
    app.run(host='0.0.0.0', port=15000)