Python if Keyword

By IncludeHelp Last updated : December 07, 2024

Description and Usage

The if is a keyword (case-sensitive) in python, it is used to define an "if statement" block that executes, if a given condition is true. if keyword is a part of conditional statements in python programming languages and it is used with the various type of if-else conditional statements.

Syntax

Syntax of if keyword:

if test_condition:
  statement(s)

Here, if test_condition is True, then statement(s) will be executed.

Sample Input/Output

Input:
num = 0

# condition
if num==0:
  print("Yes! ", num, " is equal to 0")

Output:
Yes!  0  is equal to 0

Example 1

Check whether a given number is equal to 0.

# python code to demonstrate example of 
# if keyword 

# Check whether a given number is equal to 0

# number 
num = 0

if num==0:
    print("Yes! ", num, " is equal to 0")

Output

Yes!  0  is equal to 0

Example 2

Check whether a given number is positive, negative or zero (using if keyword only).

# python code to demonstrate example of 
# if keyword 

# Check whether a given number is
# positive, negative or zero

# number 
num = 20

if num>0:
    print(num, " is positive")

if num<0:    
        print(num, " is negavtive")

if num==0:
    print(num, " is zero")

Output

20  is positive

Python else Keyword

Python yield Keyword

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