运行烧瓶加注 "WinError 10038"

Question

运行一个简单的 Flask 应用引发了 OSError: [WinError 10038] An operation was attempted on something that is not a socket。该页面不在浏览器中提供。错误是什么意思？我该如何解决？

from flask import Flask, render_template

app = Flask(__name__)

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

if __name__ == '__main__':
    app.run(debug=True)

* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger pin code: 294-294-951
Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Users\kdalal\AppData\Local\Continuum\Anaconda3\lib\threading.py", line 916, in _bootstrap_inner
    self.run()
  File "C:\Users\kdalal\AppData\Local\Continuum\Anaconda3\lib\threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\kdalal\AppData\Local\Continuum\Anaconda3\lib\site-packages\werkzeug\serving.py", line 670, in inner
    fd=fd)
  File "C:\Users\kdalal\AppData\Local\Continuum\Anaconda3\lib\site-packages\werkzeug\serving.py", line 564, in make_server
    passthrough_errors, ssl_context, fd=fd)
  File "C:\Users\kdalal\AppData\Local\Continuum\Anaconda3\lib\site-packages\werkzeug\serving.py", line 474, in __init__
    socket.SOCK_STREAM)
  File "C:\Users\kdalal\AppData\Local\Continuum\Anaconda3\lib\socket.py", line 460, in fromfd
    nfd = dup(fd)
OSError: [WinError 10038] An operation was attempted on something that is not a socket

Answer 1

这个 issue was fixed 在 Werkzeug 0.12.1 中。升级到最新版本：

pip install -U werkzeug

运行烧瓶加注 "WinError 10038"

Running Flask raises "WinError 10038"

python

flask

werkzeug

运行 烧瓶加注 "WinError 10038"

Running Flask raises "WinError 10038"

python

flask

werkzeug

运行烧瓶加注 "WinError 10038"