I want to create a WebJob in C#. Unfortunately, I need to use a Python 3 script as there is currently no suitable library for 1 particular task that I need to perform, using C#.
For example, see this answer/example.
Is it possible to have my WebJob call a Python script? I can place the Python3 script in a blob container - would I then be able to call and execute it from my C# WebJob?
Sure, it's possible to call a Python 3 script via C# WebJob that follow the sample you linked. First of all, you need to install a Python 3 runtime as below.
https://<your webapp name>.scm.azurewebsites.net, and follow the figure below to install a Python 3 runtime.
Python 3.5.2 x86, it will be installed in the path D:\home\Python35, then you just need to change the Python execute file path in the sample to try to run it.Hope it helps.
Update: Install pip tool & other Python packages.
https://<your azure webapp name>.scm.azurewebsites.net/DebugConsole.Commands as below.
D:\home>cd Python35
D:\home\Python35>curl https://bootstrap.pypa.io/get-pip.py --output get-pip.py
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1558k 100 1558k 0 0 6829k 0 --:--:-- --:--:-- --:--:-- 7179k
D:\home\Python35>python get-pip.py
Requirement already up-to-date: pip in d:\home\python35\lib\site-packages
Collecting wheel
Downloading wheel-0.29.0-py2.py3-none-any.whl (66kB)
Installing collected packages: wheel
Successfully installed wheel-0.29.0
For example, install numpy package
D:\home\Python35>python get-pip.py numpy
Collecting numpy
Downloading numpy-1.13.1-cp35-none-win32.whl (6.8MB)
Installing collected packages: numpy
Successfully installed numpy-1.13.1
get-pip.py script file to install pip tool in the python runtime path. Then, you can use Scripts/pip install <package name> to install the packages you need.Scripts/pip install <package name> command. I'm also not sure what you mean by install pip tool in the python runtime path - will that get-pip.py do that for me? For example, I can't install get-pip.py via the kudu tool. What do I do with this file?
Don't know if it is the best approach but this is what I did in the past:
Create a python webjob (manual, triggered) (see tutorial)
Create a C# webjob.
Trigger the Python job from the C# job:
using (var client = new HttpClient())
{
var username = "jobusername";
var password = "jobpassword";
var byteArray = Encoding.ASCII.GetBytes($"{username}:{password}");
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));
var response = await client.PostAsync("joburl", null);
}
You can find the job credentials from the job properties on azure portal:
