Python else Keyword

The Python else keyword is used to create conditional statements which executes when if and elif conditions gives false result.

Syntax

if condition:
  statements
else:
  statements

Flow Diagram:

Example:

In the below example, else statement is used to print a message if the variable i is not divisible by 3.

i = 16
if i % 3 == 0:
  print(i," is divisible by 3.")
else:
  print(i," is not divisible by 3.")

The output of the above code will be:

16 is not divisible by 3.

For adding more conditions, elif statement in used. The program first checks if condition. When found false, then it checks elif conditions. If found false, then else code block is executed.

Syntax

if condition:
  statements
elif condition:
  statements
...
...
...
else:
  statements

Flow Diagram:

In the below example, else statement is used to print a message when all if and elif conditions result false.

i = 16
if  i > 25:
  print(i," is greater than 25.") 
elif i <=25 and i >=10:
  print(i," lies between 10 and 25.") 
else:
  print(i," is less than 10.")

The output of the above code will be:

16 lies between 10 and 25.