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l A statement or a collection of statements within the if block is executed only if a certain condition
or expression evaluates to True.
l Python interprets non-zero values as True.
l None and 0 are interpreted as False.
Syntax:
if (Test Expression):
Indented statement block
# if block ends here
Example 1: Python if Statement
Program:
num = 3
if num > 0:
print(num,"is a positive number.")
print("This is always printed.")
Output:
3 is a positive number.
This is always printed.
Description:
In the above program, we have checked a condition using ‘If’ Statement. If the statement turns out
to be true, the statement after indentation gets executed.
Example 2: Python if Statement
Program:
num = int(input("Enter a number : "))
if num > 0: #Condition 1
print(num,"is a positive number.")
print("This is always printed.")
Output 1:
Enter a number : 15
15 is a positive number.
This is always printed
Output 2:
Enter a number : -5
This is always printed.
Description:
In the above program, we have checked a condition using the ‘If’ Statement. If the statement gets
false, the statement after the indentation gets executed.
126 Computer Genius (V2.1)-VIII

