# For else in Python

The `else` statement can also be used with loops, such as `for` and `while` loops, to execute a block of code after the loop has completed its iterations without any `break` statements being encountered.

``````for i in range(5):
print(i)
else:
print("Loop completed without encountering a break statement")
``````

In this case, the `else` block will be executed only if the loop completes all its iterations without any early termination using the `break` statement.

Note: the `else` block is optional, and you can use it according to your specific programming needs.

## Python for else example

Here are a few more examples of how the `else` statement is used in Python:

Checking Prime Numbers

``````num = 17

if num > 1:
for i in range(2, num):
if num % i == 0:
print(num, "is not a prime number")
break
else:
print(num, "is a prime number")
else:
print(num, "is not a prime number")
``````

In this example, we’re checking if a given `num` is a prime number. The `else` block is used with the `for` loop to print whether the number is prime or not after completing all iterations.

Handling User Input

``````username = input("Enter your username: ")

else:
``````

This program asks the user for their username and uses the `else` block to provide a customized welcome message based on the input.

Finding Factors

``````num = 28
factors = []

for i in range(1, num + 1):
if num % i == 0:
factors.append(i)

print("Factors of", num, "are:", factors)
``````

Here, the `else` block is not used, but this example shows how you might find factors of a number and create a list of those factors.

Using `else` with a `while` Loop

``````count = 0

while count < 5:
print("Count:", count)
count += 1
else:
print("Loop completed")
``````

Output:

In this example, the `else` block is executed when the `while` loop completes all iterations without any `break` statement.

These examples should help you understand how the `else` statement is used in various contexts in Python to handle different scenarios.

Note: IDE: PyCharm 2021.3.3 (Community Edition)

Windows 10

Python 3.10.1

All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.