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THE IF…ELIF…ELSE LADDER
The if…elif…else ladder is another type of if statement. It helps us to test multiple conditions
and follows a top-down approach. In this, as soon as the condition of the if evaluates to true, the
indented block associated with that ‘if’ is executed, and the rest of the ladder is avoided.
If none of the conditions evaluates to true, then the final else statement gets executed.
The syntax of if...elif...else ladder is shown below:
Syntax: Start
if (Test Expressions_1):
Indented block 1
True
if condition 1 block 1
elif (Test Expression_2):
Indented block 2 False
elif (Test Expression_3): True
if condition 2 block 2
Indented block 3
False
else:
True
Indented block
if condition 3 block 3
False block
Stop
Program 7: To check whether a given number is two-digit number, three-digit number or
four-digit number.
Program7.py
File Edit Format Run Options Window Help
num = int(input('Enter a number: '))
if(9 < num <= 99):
print('Two digit number')
elif(99 < num <= 999):
print('Three digit number')
elif(999 < num <= 9999):
print('Four digit number')
Conditional Statements in Python 95

