您好老师
我目前电脑只连wifi(ip为192.168.1.4没有有线网的情况下我将host不管设置为192.168.1.4还是0.0.0.0都不能通过192.168.1.4:5000/hello打开但可以用127.0.0.1:5000/hello正确打开请问如何解决

我的代码如下
from flask import Flask

author = ‘Justin’

app = Flask(name)

@app.route(’/hello/’)
def hello():
return ‘Hello, Justin’

app.run(host=‘0.0.0.0’, debug=True)
#app.run(host=‘192.168.1.4’, debug=True)

启动环境log如下
E:\study\python\vscode\flask\fisher>python fisher.py

• Serving Flask app “fisher” (lazy loading)
• Environment: production
  WARNING: This is a development server. Do not use it in a production deployment.
  Use a production WSGI server instead.
• Debug mode: on
• Restarting with stat
• Debugger is active!
• Debugger PIN: 387-432-701
• Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
  127.0.0.1 - - [15/Dec/2019 17:35:50] “[37mGET /hello/ HTTP/1.1[0m” 200 -
• Detected change in ‘E:\study\python\vscode\flask\fisher\fisher.py’, reloading
• Restarting with stat
• Debugger is active!
• Debugger PIN: 387-432-701
• Running on http://192.168.1.4:5000/ (Press CTRL+C to quit)
• Detected change in ‘E:\study\python\vscode\flask\fisher\fisher.py’, reloading
• Restarting with stat
• Debugger is active!
• Debugger PIN: 387-432-701
• Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
  127.0.0.1 - - [15/Dec/2019 17:44:28] “[37mGET /hello/ HTTP/1.1[0m” 200 -
• Detected change in ‘E:\study\python\vscode\flask\fisher\fisher.py’, reloading
• Restarting with stat
• Debugger is active!
• Debugger PIN: 387-432-701
• Running on http://0.0.0.0:80/ (Press CTRL+C to quit)
  127.0.0.1 - - [15/Dec/2019 17:46:18] “[37mGET /hello/ HTTP/1.1[0m” 200 -
  127.0.0.1 - - [15/Dec/2019 17:46:35] “[37mGET /hello/ HTTP/1.1[0m” 200 -
  127.0.0.1 - - [15/Dec/2019 17:46:49] “[37mGET /hello/ HTTP/1.1[0m” 200 -
• Detected change in ‘E:\study\python\vscode\flask\fisher\fisher.py’, reloading
• Restarting with stat
• Debugger is active!
• Debugger PIN: 387-432-701
• Running on http://0.0.0.0:81/ (Press CTRL+C to quit)
  127.0.0.1 - - [15/Dec/2019 17:48:16] “[37mGET /hello/ HTTP/1.1[0m” 200 -