-Instructions that a Python interpreter can executes are called statements.
-A statement is a unit of code like creating a variable or displaying a value.
>>> n = 17
Here, The first line is an assignment statement that gives a value to n.
The second line is a print statement that displays the value of n.
-An expression is a combination of values, variables, and operators.
-A value all by itself is considered an expression, and also a variable.
So the following are all legal expressions: