# Operators

Operators are used to perform various operations on variables and values. The standard arithmetic and assignment operators are the most familiar.

## Syntax

The following code snippet uses the assignment operator, `=`

, to set `my_variable`

to the value of `num1`

and `num2`

with an arithmetic operator acting on them. For example, if `operator`

represented `*`

, `my_variable`

would be assigned a value of `num1 * num2`

.

```
my_variable = num1 operator num2
```

Python operators can be organized into the following groups:

- Arithmetic operators for performing traditional math evaluations.
- Assignment operators for assigning values to variables.
- Comparison operators for comparing two values.
- Logical operators for combining boolean values.

## Arithmetic Operators

Python has the following arithmetic operators:

- Addition,
`+`

, which returns the sum of two numbers. - Subtraction,
`-`

, which returns the difference of two numbers. - Multiplication,
`*`

, which returns the product of two numbers. - Division,
`/`

, which returns the quotient of two numbers. - Exponentiation,
`**`

, which returns the value of one number raised to the power of another. - Modulus,
`%`

, which returns the remainder of one number divided by another. - Floor division,
`//`

, which returns the integer quotient of two numbers.

## Assignment Operators

Python includes the following assignment operators:

- The
`=`

operator assigns the value on the right to the variable on the left. - The
`+=`

operator updates a variable by incrementing its value and reassigning it. - The
`-=`

operator updates a variable by decrementing its value and reassigning it. - The
`*=`

operator updates a variable by multiplying its value and reassigning it. - The
`/=`

operator updates a variable by dividing its value and reassigning it. - The
`%=`

operator updates a variable by calculating its modulus against another value and reassigning it.

## Comparison Operators

Python has the following comparison operators:

- Equal,
`==`

, for returning`True`

if two values are equal. - Not equal,
`!=`

, for returning`True`

if two values are not equal. - Less than,
`<`

, for returning`True`

if left value less than right value. - Less than or equal to,
`<=`

, for returning`True`

if left value is less than or equal to right value. - Greater than,
`>`

, for returning`True`

if left value greater than right value. - Greater than or equal to,
`>=`

, for returning`True`

if left value greater than or equal to right value.

## Logical Operators

Python has the following logical operators:

- The
`and`

operator returns`True`

if both statements are`True`

. - The
`or`

operator returns`True`

if either statement is`True`

. - The
`not`

operator returns`True`

if its associated statement is`False`

.

## Order of Operations

Python evaluates an expression in order of precedence as follows:

- Items in parentheses, (
`(`

…`)`

), have the highest level of precedence, expressions within them are evaluated first. - Exponentiation (
`**`

) - Multiplication and division operators (
`*`

,`/`

,`//`

&`%`

) - Addition and subtraction (
`+`

&`-`

) - Comparison (
`<`

,`<=`

,`>`

&`>=`

) - Equality (
`==`

&`!=`

) `not`

`and`

`or`

## Membership operators

- The
`in`

operator returns`True`

if the element on the left is found within the iterable object on the right. Here, the element on the right side of the`in`

operator must be an iterable object like a list, string, dictionary, etc. - The
`not in`

operator returns`True`

if the element on the left is not found within the iterable object on the right. Again, the element on the right side of the`not in`

operator must be an iterable object.

**Note:** Items at the same precedence are evaluated left to right. The exception to this is exponentiation, which evaluates right to left.

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