1. What is the usage of a question mark after a variable? What is a tab completion? What is the usage of % before a command?

2. Please explainin examples about single quotation mark, double quotation marksand triple quotation marksusage in Python string.

3. Please explain in an example aboutthe usage ofPython try...except as wellas raise exception.

4. Please explain the difference between indexing and slicing aswell as negative number used in indexing and slicing.

5. Please explain how a single asterisk is used for unpacking in Python.