You already know most of these topics, now the goal is to deepen your knowledge!
Please be aware, that the tutorials above contains exercises which you have to solve (by your own), otherwise your practical knowledge will be incomplete.
Working with Strings - string functions and manipulators
Read the following tutorial and try out the example codes :
http://www.diveintopython3.net/strings.html
Working with Dictionaries, and more Collection types
Read the following tutorial and practice with all the exercises :
http://python-textbok.readthedocs.io/en/1.0/Collections.html
Working with Iterables, Iterators, Generators, Comprehensions
Read the following tutorial and practice with all the exercises :
Working with Functions and their arguments, input parameters or default parameters
Read the following tutorial until the Decorators part and practice with the first 5 exercises :