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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:

Python If-else Loop

Example:

In the example below, 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, it checks elif conditions. If all elif conditions are found false, then else code block is executed.

Syntax

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

Flow Diagram:

Python If-elif-else Loop

In the example below, elif statement is used to add more conditions between if statement and else statement.

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.

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