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| import time | |
| import random | |
| from flask import Flask, Response, stream_with_context | |
| app = Flask(__name__) | |
| script = """ | |
| <script> | |
| function insert(data) { | |
| var item = document.createElement('div'); | |
| item.setAttribute('class', 'data') | |
| item.setAttribute('id', data) | |
| item.textContent = data | |
| var elements = document.getElementsByClassName('data'); | |
| for (var i = 0; i < elements.length; i++) { | |
| var id = elements[i].getAttribute('id'); | |
| if (data <= id) { | |
| document.body.insertBefore(item, elements[i]); | |
| return; | |
| } | |
| } | |
| document.body.appendChild(item); | |
| } | |
| </script> | |
| """ | |
| @app.route('/') | |
| def index(): | |
| data = list(range(10)) | |
| random.shuffle(data) | |
| def generate(): | |
| yield '<html><head>{}</head><body>'.format(script) | |
| for d in data: | |
| time.sleep(1) | |
| yield '<script>insert({})</script>'.format(d) | |
| yield '</body></html>' | |
| return Response(stream_with_context(generate())) | |
| app.debug = True | |
| app.run() |
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