Most Useful Python String Functions — TutorialBrain
Python string & string functions - FuseBulbs Basics of python language
Python String Module | DigitalOcean
How Do I Check If a String Is Empty in Python?
Strings - Python - Syntax, Example
Python String Formatting Best Practices – Real Python
Python String Formatting: Overview and Real Examples | Udacity
Some of the String methods in python - IT Students of Nepal | Facebook
python tutorial - Python String | How to check if a string is a valid keyword in Python - By Microsoft Award MVP - learn python - python programming - Learn in 30sec | wikitechy
8. Strings — How to Think Like a Computer Scientist: Learning with Python 3
The Python String .format() Method - YouTube
Python upper() function | Why do we use Python String upper() function?