Python - if elif else statement Syntax Example

<if...else Statement    Nested if Statement >

if...elif...else Control Statement

• The elif is an abbreviation of else if.
• There is no limit to using elif.
• You can use the number of elif for checking more than two conditions.
• Each condition is checked in order.
• If one is False, the next will be checked, and so on.
• If one of them is True, that corresponding branch will be executed and then the conditional statement will end.
• Suppose, if more than one condition is true, in that case only the first True branch will be executed.

Syntax of Python if...elif...else

Following is the basic syntax of the if..elif..else decission control flow statement.

if expression_1:
    Statements
elif expression_2:
    Statements
elif expression_3:
    Statements
else:
    Statements

Example with if...elif...else in Python

Below is an example proram to explain the if...elif...else branching in python .

A = int(input('enter the first value: '))
B = int(input('enter the second value: '))

if(A>B):
     print('The value A greater than B')
elif(A<B):
     print('The value A is less than B')
elif(A==0)and(B==0):
     print('Both A and B are equal to Zero')
else:
     print('Both A and B are equal')
	

While executing above program you will get the following output.

Test_Case 1:

F:\>python conditionstm.py
enter the first value: 20
enter the second value: 3
The value A is greater than B

Test_Case 2:

F:\>python conditionstm.py
enter the first value: 20
enter the second value: 30
The value A is less than B

Test_Case 3:

F:\>python conditionstm.py
enter the first value: 0
enter the second value: 0
Both A and B are equal to Zero

Test_Case 4:

F:\>python conditionstm.py
enter the first value: 4
enter the second value: 4
Both A and B are equal

<if...else Statement    Nested if Statement >