if, elif and else

The else statement in Python is used to define a block of code that will execute if none of the preceding if or elif conditions are True. The else statement provides a fallback mechanism in your conditional logic, ensuring that your program can handle cases that don’t match any of your specified conditions.

How else Works

An else statement is typically placed at the end of an if-elif chain. When Python encounters an if-elif-else structure:

  • It first evaluates the if condition. If True, the code inside the if block is executed, and Python skips the rest of the conditions.
  • If the if condition is False, Python moves on to evaluate the elif conditions in order, when there are any.
  • If none of the if or elif conditions are True, the code inside the else block is executed.

Examples of else Usage

Here’s a basic example:

a = 15.0

if a > 20 :
    print("a is larger than 20")
elif a > 15 :
    print("a is larger than 15")
else:
    print("a is smaller than 15)
# Output:
# a is larger than b

temperature = 25

if temperature > 30:
    print("It's a hot day.")
elif temperature > 20:
    print("It's a nice day.")
elif temperature > 10:
    print("It's a bit chilly.")
else:
    print("It's cold outside.")
# Output:
# It's a nice day.
``

`else` can also directly follow an `if`-statement without `elif`.
```python
a = 15.0
b = 20.0

if a < b:
    print("a is smaller than b")
else:
    print("a is not smaller than b")
# Output:
# a is smaller than b

Updated: