else Statement
The ’else’ statement in Python serves as a contingent mechanism, typically employed within control flow structures to execute a block of code should all preceding conditions fail to meet their respective criteria. This makes it a crucial component when writing decision-making code in Python.
Syntax of else statement
The syntax of the ’else’ statement in Python is straightforward:
The if
statement checks for a condition. If that condition is True
, the block of code under if
executes. If that condition is False
, the block of code under else
executes.
Demonstrating the use of else statement
Let’s demonstrate the use of an else
statement in Python.
In this example, since the age is less than 18, the output will be “You are not eligible to vote.”
Note
Remember, the else
block is optional. The decision to utilize it will subject to your program’s requirements.
else Statement in Loop Structures
The ’else’ statement in Python can also be used in loop structures. Here’s how:
In this example, after the for
loop has exhausted the iterable, the else
block executes and prints “Loop has ended.”
Caution
The else
block only executes if the loop completes naturally. If the loop is prematurely terminated by a break
statement, the else
block won’t be executed.
Grasping the use of the ’else’ statement alongside ‘if’ and loop structures can greatly enhance your control flow handling capabilities in Python by providing a concise and clean method of executing code based on varying conditions.