Category "nested"

Need a direct way of implementing Azure spring data cosmos db query implementation for a nested parameter

Say for example an object in cosmosDb looks like this:- { att1: val1, att2: val2, att3: { att4: val4, att5: val5

Python syntax to return an expression only if its value is not None

I want to know how to make a function return the return value of a nested function, if the return value of the nested function is not None. To make my code work