Lesson 17: If elif else Statements In Python

In Python if statement evaluates whether a condition is equal to true or false. The statement will execute a block of code if a specified condition is equal to true. Otherwise, the block of code within the if statement is not executed. Decision making is required when we want to execute a code only if a certain condition is satisfied. The if…elif…else statement is used in Python for decision making.

Example Code: If elif else Statements In Python.

Code

age = 18 if age >= 18: print("you are an adult") print("you can vote") elif age < 18 and age > 3: print("You are not eligible") else: print("You are a child") print("thank you")

The above program speifies the output given 3 conditions as under.

Condition 1. if age = 18

you are an adult.

you can vote.

thank you.

Condition 2. age < 18 and age > 3

You are not eligible.

thank you.

Condition 3. else

You are a child

thank you.

print("thank you") is the common string for all the 3 given condition.

Now change the age variable in the code above and observe the output for different ages.

Condition 1 if: for age >= 18

Code

age = 19 if age >= 18: print("you are an adult") print("you can vote") elif age < 18 and age > 3: print("You are not eligible") else: <br><p> print("You are a child") print("thank you") output will be you are an adult you can vote thank you.

Condition 2 elif: for age < 18 and age > 3

Code

age = 12 if age >= 18: print("you are an adult") print("you can vote") elif age < 18 and age > 3: print("You are not eligible") else:<br><p> print("You are a child") print("thank you") output will be You are not eligible thank you.

Condition 3 else: for any condition other than the above two situation.

Code

age = 2 if age >= 18: print("you are an adult") print("you can vote") elif age < 18 and age > 3: print("You are not eligible") else: <br><p> print("You are a child") print("thank you") output will be You are a child thank you