Operators are special symbols that perform operations on variables and values. For example,

`print(5 + 6) # 11`

Here, `+`

is an operator that adds two numbers: **5** and **6**.

## Types of Python Operators

Here's a list of different types of Python operators that we will learn in this tutorial.

- Arithmetic operators
- Assignment Operators
- Comparison Operators
- Logical Operators
- Bitwise Operators
- Special Operators

## 1. Python Arithmetic Operators

Arithmetic operators are used to perform mathematical operations like addition, subtraction, multiplication, etc. For example,

`sub = 10 - 5`

Here, `-`

is an arithmetic operator that subtracts two values or variables.

Operator | Operation | Example |
---|---|---|

`+` |
Addition | `5 + 2 = 7` |

`-` |
Subtraction | `4 - 2 = 2` |

`*` |
Multiplication | `2 * 3 = 6` |

`/` |
Division | `4 / 2 = 2` |

`%` |
Modulo | `5 % 2 = 1` |

`**` |
Power | `4 ** 2 = 16` |

### Example 1: Arithmetic Operators in Python

```
a = 7
b = 2
# addition
print ('Sum: ', a + b)
# subtraction
print ('Subtraction: ', a - b)
# multiplication
print ('Multiplication: ', a * b)
# division
print ('Division: ', a / b)
# modulo
print ('Modulo: ', a % b)
# a to the power b
print ('Power: ', a ** b)
```

**Output**

Sum: 9 Subtraction: 5 Multiplication: 14 Division: 3.5 Modulo: 1 Power: 49

In the above example, we have used multiple arithmetic operators,

`+`

to add`a`

and`b`

`-`

to subtract`b`

from`a`

`*`

to multiply`a`

and`b`

`/`

to divide`a`

by`b`

`%`

to get the remainder`**`

to get`a`

to the power`b`

## 2. Python Assignment Operators

Assignment operators are used to assign values to variables. For example,

```
# assign 5 to x
var x = 5
```

Here, `=`

is an assignment operator that assigns `5`

to `x`

.

Here's a list of different assignment operators available in Python.

Operator | Name | Example |
---|---|---|

`=` |
Assignment Operator | `a = 7` |

`+=` |
Addition Assignment | `a += 1 # a = a + 1` |

`-=` |
Subtraction Assignment | `a -= 3 # a = a - 3` |

`*=` |
Multiplication Assignment | `a *= 4 # a = a * 4` |

`/=` |
Division Assignment | `a /= 3 # a = a / 3` |

`%=` |
Remainder Assignment | `a %= 10 # a = a % 10` |

`**=` |
Exponent Assignment | `a **= 10 # a = a ** 10` |

### Example 2: Assignment Operators

```
# assign 10 to a
a = 10
# assign 5 to b
b = 5
# assign the sum of a and b to a
a += b # a = a + b
print(a)
# Output: 15
```

Here, we have used the `+=`

operator to assign the sum of `a`

and `b`

to `a`

.

Similarly, we can use any other assignment operators according to the need.

## 3. Python Comparison Operators

Comparison operators compare two values/variables and return a boolean result: `True`

or `False`

. For example,

```
a = 5
b =2
print (a > b) # True
```

Here, the `>`

comparison operator is used to compare whether `a`

is greater than `b`

or not.

Operator | Meaning | Example |
---|---|---|

`==` |
Is Equal To | `3 == 5` gives us False |

`!=` |
Not Equal To | `3 != 5` gives us True |

`>` |
Greater Than | `3 > 5` gives us False |

`<` |
Less Than | `3 < 5` gives us True |

`>=` |
Greater Than or Equal To | `3 >= 5` give us False |

`<=` |
Less Than or Equal To | `3 <= 5` gives us True |

### Example 3: Comparison Operators

```
a = 5
b = 2
# equal to operator
print('a == b =', a == b)
# not equal to operator
print('a != b =', a != b)
# greater than operator
print('a > b =', a > b)
# less than operator
print('a < b =', a < b)
# greater than or equal to operator
print('a >= b =', a >= b)
# less than or equal to operator
print('a <= b =', a <= b)
```

**Output**

a == b = False a != b = True a > b = True a < b = False a >= b = True a <= b = False

**Note:** Comparison operators are used in decision-making and loops. We'll discuss more of the comparison operator and decision-making in later tutorials.

## 4. Python Logical Operators

Logical operators are used to check whether an expression is `True`

or `False`

. They are used in decision-making. For example,

```
a = 5
b = 6
print((a > 2) and (b >= 6)) # True
```

Here, `and`

is the logical operator **AND**. Since both `a > 2`

and `b >= 6`

are `True`

, the result is `True`

.

Operator | Example | Meaning |
---|---|---|

`and` |
a and b |
Logical AND:`True` only if both the operands are `True` |

`or` |
a or b |
Logical OR:`True` if at least one of the operands is `True` |

`not` |
not a |
Logical NOT:`True` if the operand is `False` and vice-versa. |

### Example 4: Logical Operators

```
# logical AND
print(True and True) # True
print(True and False) # False
# logical OR
print(True or False) # True
# logical NOT
print(not True) # False
```

**Note**: Here is the truth table for these logical operators.

## 5. Python Bitwise operators

Bitwise operators act on operands as if they were strings of binary digits. They operate bit by bit, hence the name.

For example, **2** is `10`

in binary and **7** is `111`

.

**In the table below:** Let `x` = 10 (`0000 1010`

in binary) and `y` = 4 (`0000 0100`

in binary)

Operator | Meaning | Example |
---|---|---|

& | Bitwise AND | x & y = 0 (`0000 0000` ) |

| | Bitwise OR | x | y = 14 (`0000 1110` ) |

~ | Bitwise NOT | ~x = -11 (`1111 0101` ) |

^ | Bitwise XOR | x ^ y = 14 (`0000 1110` ) |

>> | Bitwise right shift | x >> 2 = 2 (`0000 0010` ) |

<< | Bitwise left shift | x << 2 = 40 (`0010 1000` ) |

## 6. Python Special operators

Python language offers some special types of operators like the **identity** operator and the **membership** operator. They are described below with examples.

### Identity operators

In Python, `is`

and `is not`

are used to check if two values are located on the same part of the memory. Two variables that are equal does not imply that they are identical.

Operator | Meaning | Example |
---|---|---|

`is` |
`True` if the operands are identical (refer to the same object) |
`x is True` |

`is not` |
`True` if the operands are not identical (do not refer to the same object) |
`x is not True` |

### Example 4: Identity operators in Python

```
x1 = 5
y1 = 5
x2 = 'Hello'
y2 = 'Hello'
x3 = [1,2,3]
y3 = [1,2,3]
print(x1 is not y1) # prints False
print(x2 is y2) # prints True
print(x3 is y3) # prints False
```

Here, we see that `x1` and `y1` are integers of the same values, so they are equal as well as identical. Same is the case with `x2` and `y2` (strings).

But `x3` and `y3` are lists. They are equal but not identical. It is because the interpreter locates them separately in memory although they are equal.

### Membership operators

In Python, `in`

and `not in`

are the membership operators. They are used to test whether a value or variable is found in a sequence (string, list, tuple, set and dictionary).

In a dictionary we can only test for presence of key, not the value.

Operator | Meaning | Example |
---|---|---|

`in` |
`True` if value/variable is found in the sequence |
`5 in x` |

`not in` |
`True` if value/variable is not found in the sequence |
`5 not in x` |

### Example 5: Membership operators in Python

```
message = 'Hello world'
dict1 = {1:'a', 2:'b'}
# check if 'H' is present in message string
print('H' in message) # prints True
# check if 'hello' is present in message string
print('hello' not in message) # prints True
# check if '1' key is present in dict1
print(1 in dict1) # prints True
# check if 'a' key is present in dict1
print('a' in dict1) # prints False
```

**Output**

True True True False

Here, `'H'`

is in `x` but `'hello'`

is not present in `x` (remember, Python is case sensitive).

Similarly, `1`

is key and `'a'`

is the value in dictionary `y`. Hence, `'a' in y`

returns `False`

.