If AND

Introduction:

Python supports the usual logical conditions from mathematics:
- Equals: a == b
- Not Equals: a != b
- Less than: a < b
- Less than or equal to: a <= b
- Greater than: a > b
- Greater than or equal to: a >= b

Combining Conditions with AND:

You can combine multiple conditions into a single expression in Python conditional statements like if, if-else, and elif statements using the AND logical operator. This helps avoid writing multiple nested if statements unnecessarily.

Examples:

Python If with AND Operator:

Using the AND operator to combine two boolean conditions.

python

a = 5
b = 2

# Nested if
if a == 5:
    if b > 0:
        print('a is 5 and', b, 'is greater than zero.')

# OR you can combine the conditions as
if a == 5 and b > 0:
    print('a is 5 and', b, 'is greater than zero.')

Output:

a is 5 and 2 is greater than zero.
a is 5 and 2 is greater than zero.

Python If-Else with AND Operator:

Combining two basic conditional expressions in the boolean expression of a Python if-else statement.

python

a = 3
b = 2

if a == 5 and b > 0:
    print('a is 5 and', b, 'is greater than zero.')
else:
    print('a is not 5 or', b, 'is not greater than zero.')

Output:

a is not 5 or 2 is not greater than zero.

Python Elif with AND Operator:

Combining two basic conditional expressions in the boolean expression of a Python elif statement.

python

a = 8

if a < 0:
    print('a is less than zero.')
elif a > 0 and a < 8:
    print('a is in (0.8)')
elif a > 7 and a < 15:
    print('a is in (7.15)')

Output:
```
a is in (7.15)
```

Exercises:

If with AND Operator:

Write a program to check if a number is between 1 and 10 and if it is even.

python

number = int(input("Enter a number: "))

if number > 1 and number < 10 and number % 2 == 0:
    print("The number is between 1 and 10 and is even.")
else:
    print("The number is not between 1 and 10 or it is not even.")

If-Else with AND Operator:

Write a program to check if a user is a teenager (age between 13 and 19) and if they have permission.

python

age = int(input("Enter age: "))
has_permission = input("Do you have permission (yes/no): ").lower() == 'yes'

if age >= 13 and age <= 19 and has_permission:
    print("You are a teenager with permission.")
else:
    print("You are either not a teenager or do not have permission.")

Summary:

In this tutorial, we learned how to use the Python AND logical operator with Python conditional statements (if, if-else, elif). Practice using these operators to become proficient in forming compound logical expressions in your programs