AssertionError

AssertionError is a Python built-in exception that is raised when an assert statement fails. It is used to indicate that an assertion made in the code is not true. This exception is raised automatically by the assert statement, and it can be caught and handled in a try-except block.

For example, consider the following code snippet:

x = 5
assert x == 10, "x should be 10"

In this example, the assert statement checks if the value of x is equal to 10. Since x is actually 5, the assertion fails, and an AssertionError is raised with the message "x should be 10".

To handle this exception, we can use a try-except block as follows:

try:
    x = 5
    assert x == 10, "x should be 10"
except AssertionError as e:
    print(e)

In this case, the AssertionError is caught by the except block, and the error message is printed.