horos | open source medical image viewer | Messaging library

If everything else is working like you said it is in the comments, this should probably fix it:

Your application class should implement HasActivityInjector. Use official documentation to setup dagger properly.

You could use a library like https://www.npmjs.com/package/xml-js

To convert the XML to JSON where you can access it using the built in javascript JSON functions JSON.parse(target) or JSON.stringify(target)

quoting this package, here is an example of how simple it is to turn XML into JSON

Using str.isdigit is the right approach, but int(level2) is doing nothing (useful). The call to int returns an integer value which you then discard, it does not mutate the string level2. (In fact, strings don't have any mutating methods on them.)

In order to fix your approach (after fixing indentation), create a new list to which you append the return values of the calls to int (or the original value, in case str.isdigit returns False).

This could also be done with a list comprehension as follows.