I read the documentation of selenium python, however I wasn't able to understand what both expected_conditions and WebDriverWait do.

First question so please excuse any formalities I miss.

I am developing a system - the backend in Python, the frontend in PHP. The system will leverage a MongoDB database for a number of reasons. I plan to use an Object Document Mapper to make database lookups, and relationships, between pieces of data relatively trivial.

Adding this information as requested

The plan I envision is that the PHP interface would allow users to view the data, and navigate through to connected information, leveraging the relationship defined in the database. For example

Organisation > IP Ranges > IPs > TCP ports open on this IPs

The Python side is the system collecting this information, entering it into the database, and defining/establishing the relationship between the data (i.e. this IP range belongs to this organisation)

How a machine learning algorithm(Present in Spark MLlib) can be applied to Data collected from sensors in KAA. I haven't found any such use case built on KAA. My requirement is to collect the live streams of data, processing and cleaning the same and applying a machine leaning algorithm in KAA. I have done this by collecting the data using Apache nifi and through Kafka passing the data to Spark Streaming Application on which I am applying the machine learning algorithm.

I want to perform the same in KAA as an IoT platform.