# Logical Operators in Python

###### Operators in Python

In this lesson, we will learn what is the Logical Operators and how it works in Python programming with some examples.

## What is Logical Operators

Logical operators in Python are used to evaluate two or more conditions. They allow a program to make a decision based on multiple conditions. If the result of the logical operator is true then 1 is returned otherwise 0 is returned.

There are 3 types of logical operators in Python and they are:

**and****or****not**

Now let's see the examples of all the logical operators one by one for more understanding.

### and Operator

**and** operator is used to check if two or more given
conditions are true or not. The output of **and** operator is True only if
all the given conditions are correct otherwise the output will be False if any one
of the given conditions is wrong.

#### Example

```
x=15
y=2
z=6
k=25
a=x>5 and y<6 and k>=25 # output of a is True
b=x>y and k<25 # output of b is False
```

In the example above the output of **a** is **True** because all
the three given conditions x>5, y<6 and k>=25 are correct (true). On the other hand the
output of **b** is **False** because out of the two given conditions x>y and k<25 the
second condition k<25 is wrong (false).

### or Operator

**or** operator is used to check if any one of the given
conditions is true or not. The output of **or** operator is True if at least
any one of the given conditions is correct otherwise the output will be False only
if all the given conditions are wrong.

#### Example

```
x=15
y=2
z=6
k=25
a=x<5 or y<6 or k>=25 # output of a is True
b=x<y or k<25 # output of b is False
```

In the example above the output of **a** is **True** because out of
the three given conditions x<5, y<6 and k>=25 the second condition is correct (true). On the
other hand the output of **b** is **False** because out of the two given conditions x<y
and k<25 both of them are wrong (false).

### not Operator

**not** operator negates the value of the condition. If the
condition is false then the output of **not** operator becomes True. If the
condition is true then the output of **not** operator becomes False.

#### Example

```
x=15
y=10
a=not(x>5) # output of a is False
b=not(y<5) # output of b is True
```

In the example above the output of **a** is **False** because the
given condition x>5 is correct (true) so **not** operator changed the output from
True to False. On the other hand the output of **b** is **False** because the given condition
y<5 is wrong (false) so **not** operator changed the output from False to True.

## Test Your Knowledge

Attempt the multiple choice quiz to check if the lesson is adequately clear to you.