Explain what exceptions are in the Python language and how to handle them

Exceptions in Python are errors that occur during program execution and interrupt its normal flow. They allow handling errors without crashing the program.

To work with exceptions, try-except blocks are used:

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

You can also use else for code that runs if no exception occurs, and finally for code that runs in any case:

try:
    f = open('file.txt')
    data = f.read()
except FileNotFoundError:
    print("File not found")
else:
    print("File read successfully")
finally:
    f.close()

Thus, exceptions help control errors and make programs more resilient.