Python Flask Hosting on Windows 10 IIS server

Question

I Want to Host my Python Rest API on Windows 10 IIS server.

First I tried to host a sample application but can not able to that.

my_app.py

from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return 'Hello IIS from Flask framework.'

@app.route('/Hello')
def hello_world():
    return 'Hello World!'
    
if __name__ == '__main__':
    app.run()

web.config

<configuration>  
  <system.webServer>
    <handlers>
        <add name="Python FastCGI"
            path="*"
            verb="*"
            modules="FastCgiModule"
            scriptProcessor="C:\Program Files\Python39\python.exe|C:\Program Files\Python39\lib\site-packages\wfastcgi.py"
            resourceType="Unspecified"
            requireAccess="Script" />
    </handlers>
  </system.webServer>
  <appSettings>
    <add key="WSGI_HANDLER" value="my_app.app" /> <!-- {name_of_file}.{name_of_flask_app}-->
    <add key="PYTHONPATH" value="C:\inetpub\wwwroot\test" />
    <add key="WSGI_LOG" value="C:\inetpub\wwwroot\test\app.log" />
  </appSettings>
</configuration>

I have tried the below tutorials but it is not working for me.

HTTP Error 500.0 - Internal Server Error : see the Error scrennshot

I need help.... Thanks

Ding Peng · Accepted Answer · 2020-11-20T06:10:32.037

0

If you want IIS host python application, you need to install python, and then you need to add module mapping in IIS. Here are the steps:

First install python on your computer.
Enable CGI:

After successful installation, you will see "ISAPI and CGI Restrictions" and Handler Mappings:

Enter "ISAPI and CGI Restrictions", add a new ISAPI or CGI Restrictions:

Enter "Handler Mappings", then add Module Mapping(%S %S needs to be added or an error will be reported):

Finally we can successfully access the python Application:

UPDATE:

Can you see python in your Handler Mappings?

This is my web.config:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
</configuration>

There is nothing in web.config. All my settings are for the entire IIS:

Click "Directory Browsing":

Enable it:

edited Nov 20 '20 at 06:10

answered Nov 19 '20 at 08:12

Ding Peng

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HTTP Error 500.0 - Internal Server Error scriptProcessor could not be found in application configuration – Dev_King Nov 20 '20 at 05:15
Are your steps the same as mine? – Ding Peng Nov 20 '20 at 05:17
Is it because of the project? Try to deploy a site, there is only one test.py file in the site. – Ding Peng Nov 20 '20 at 05:21
this is a sample project for the IIS host test – Dev_King Nov 20 '20 at 05:27
Wait. I will check that – Dev_King Nov 20 '20 at 05:33
I post my web.config. – Ding Peng Nov 20 '20 at 05:46
HTTP Error 403.14 - Forbidden The Web server is configured to not list the contents of this directory. – Dev_King Nov 20 '20 at 06:07
You need to enable Directory Browsing. – Ding Peng Nov 20 '20 at 06:11
https://developpaper.com/using-iis-to-deploy-flask-website-on-windows-platform/ – Dev_King Nov 20 '20 at 06:58
https://stackoverflow.com/questions/64925688/windows-10-iis-url-error-python-flask-rest-api – Dev_King Nov 20 '20 at 08:03

Python Flask Hosting on Windows 10 IIS server

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