Why is exception handling used in Python and how does it help in writing resilient code?

Exception handling in Python is used to manage errors that may occur during program execution. It helps prevent crashes and ensures correct program behavior in unusual situations.

Using the try-except construct helps catch errors and handle them, for example, by displaying understandable messages, performing alternative actions, or logging the problem. This makes the code more robust and reliable, as the program does not crash at the first error but responds appropriately.

Example:

try:
    result = 10 / 0
except ZeroDivisionError:
    print("Division by zero is not possible")

In this example, the program will not terminate with an error but will display a message that division by zero is impossible.