The If statement is used to execute a block of code when condition is true.
if condition: statements
i = 15; if i % 3 == 0: print(i," is divisible by 3.")
15 is divisible by 3.
The else statement is always used with If statement. It is used to execute block of codes whenever If condition gives false result.
if condition: statements else: statements
i = 16; if i % 3 == 0: print(i," is divisible by 3.") else: print(i," is not divisible by 3.")
16 is not divisible by 3.
elif statement is used to tackle multiple conditions at a time. For adding more conditions, elif statement in used. Please see the syntax.
if condition: statements elif condition: statements ... ... ... else: statements
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.")
16 lies between 10 and 25.
When if has only one statement to execute, the code can be written in a single line as described In the below example.
i = 15; if i % 3 == 0 : print(i," is divisible by 3.")
15 is divisible by 3.
When if and else both have only one statement to execute, the code can be written in a single line as described In the below example.
i = 16; print(i," is divisible by 3.") if i % 3 == 0 else print(i," is not divisible by 3.")
16 is not divisible by 3.
