What is str() function is used for? What is bool() function is used for? What is eval() function is used for? What is the data type returned by input() function? What is range() function is used for and how many arguments do we normally provide inside of the parenthesis when we use range() function? What is the purpose of those arguments? In Python, to use math related functions such as sin(), cos(), sqrt() what do we do? What are the relational operators in Python? What are the conditional (logical operators (connectors) in Python? What is the mandatory symbol to precede a comment in Python?