Nodejs Express vs Django Choosing the best suitable backend component for given requirements

Question

I'm trying to build a software architecture for my web development. The main requirements of the website are as follows:

• visualize real-time data
• carry out machine learning analysis
• Report visualization information via Email or SMS

The concept for such an web application consists of a database, a backend and a frontend component. I have already selected a time series database.

Despite my research, I cannot determine which backend component best meets the requirements: Nodejs + Expressjs or Django. My programming knowledge in Javascript and Python is on the same level.

Why Node:

• its Single Threaded Event Loop Model for real-time web applications
• same programming language for selecting a javascript framework on the frontend-side (but python for machine learning analysis)
• More flexibility than Django due to its MTV pattern
• (usually) less execution time than python-Code

Why Django:

• Django Channels for real-time web applications
• python language in backend, frontend and for data analysis
• quicker development process because of the language simplicity
• more secure due to its build-in security tools

Question: Are there any other technical arguments why I should consider choosing Nodejs or Django or any arguments for not choosing one of them?