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Conditional statements in Python if, elif, and else.

 Conditional statements in Python if, elif, and else.


Conditional statements in Python allow you to execute certain blocks of code based on whether a certain condition is met. The most commonly used conditional statements are if, elif, and else.

Here's the syntax for an if statement in Python:

if condition: # code to execute if condition is True

If the condition in the if statement is True, the code inside the indented block following the if statement is executed. If the condition is False, the code in the block is skipped.


Here's an example that demonstrates the use of an if statement:

x = 5 if x > 0: print("x is positive")


In this example, the variable x is assigned the value 5. The if statement tests whether x is greater than 0, which is True, so the code inside the indented block is executed and the message "x is positive" is printed.


The elif statement is used to test multiple conditions in a single if statement. Here's the syntax for an elif statement:

if condition1: # code to execute if condition1 is True elif condition2: # code to execute if condition1 is False and condition2 is True


If the first condition in the if statement is False, the program moves on to the next elif statement and tests the next condition. If that condition is True, the code inside the corresponding indented block is executed. If that condition is False, the program moves on to the next elif statement and repeats the process.

Here's an example that demonstrates the use of an elif statement:

if condition1: # code to be executed if condition1 is True elif condition2: # code to be executed if condition1 is False and condition2 is True


Here's an example of using elif to check multiple conditions:

num = int(input("Enter a number: ")) if num > 0: print("The number is positive") elif num == 0: print("The number is zero")


In this example, if num is greater than 0, the message "The number is positive" will be printed. If num is not greater than 0, but is equal to 0, the message "The number is zero" will be printed.

Finally, you can use an else statement to specify a default case if all other conditions are False:

if condition1: # code to be executed if condition1 is True elif condition2: # code to be executed if condition1 is False and condition2 is True else: # code to be executed if both condition1 and condition2 are False


Here's an example of using else to handle a default case:

num = int(input("Enter a number: ")) if num > 0: print("The number is positive") elif num == 0: print("The number is zero") else: print("The number is negative")

In this example, if num is greater than 0, the message "The number is positive" will be printed. If num is equal to 0, the message "The number is zero" will be printed. Otherwise, if num is less than 0, the message "The number is negative" will be printed.



By itsbilyat

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