This operator provides the sums of two numbers. It does not compare objects or their values it checks only to determine whether two object references refer to the same object. The Is operator is an object reference comparison operator. The string concatenation operator (&) is not an arithmetic operator, but in precedence, it does fall after all arithmetic operators and before all comparison operators. If addition and subtraction, multiplication and division, occur together respectively in an expression, each operation is evaluated as it occurs from left to right. Arithmetic and logical operators are evaluated in the following order of precedence: Supported Operators and Order of Precedence Arithmetic Comparison operators all have equal precedence they are evaluated in the left-to-right order in which they appear. If expressions contain operators from more than one category, arithmetic operators are evaluated first, comparison operators next, and logical operators last. Within parentheses, however, normal Operator Precedence is maintained. Operations within parentheses are always performed before those outside. Parentheses can be used to override the order of precedence and evaluate some parts of an expression before others. If several operations occur in an expression, each part is evaluated and resolved in a predetermined order called Operator Precedence. Boolean Operators include AND, OR, XOR, or NOT and can have one of two values, true or false.Logical Operators are used to perform logical operations and include AND, OR, or NOT.Concatenation Operators are used to combine strings.Comparison Operators are used to perform comparisons.Assignment Operators can be numeric, date, system, time, or text. Assignment Operators are used to assign a value to a property or variable.Arithmetic Operators are used to perform mathematical calculations.There are various types of operators discussed in this appendix.

Python arithmetic functions