Mastering Python Exceptions

What is the purpose of handling exceptions in Python?

• To simplify the code structure.

• To improve the performance of the program.

• The purpose of handling exceptions in Python is to manage errors gracefully and maintain program stability.

• To enhance the user interface.

Explain the structure of a try and except block.

• A try block must always include a 'catch' statement.

• The structure of a try and except block is: 'try:' followed by code, and 'except ExceptionType:' followed by handling code.

• The structure of a try block is 'try:' followed by 'finally:' for cleanup.

• The try and except block is used for defining functions in Python.

What happens if an exception is not caught in a try block?

• The program will automatically fix the error.

• The exception will be logged and ignored.

• The program will continue running without any issues.

• The program may terminate or crash.

What is the syntax to raise an exception in Python?

• exception ExceptionType()

• raise ExceptionType or raise ExceptionType("message")

• throw ExceptionType

• raiseError ExceptionType

Can you catch multiple exceptions in a single except block? If so, how?

• You can catch multiple exceptions by using separate except blocks.

• You can catch exceptions only if they are of the same type.

• Yes, you can catch multiple exceptions in a single except block by using a tuple.

• You can only catch one exception at a time.

What is the difference between a built-in exception and a custom exception?

• Built-in exceptions are only for syntax errors.

• Custom exceptions cannot be used in libraries.

• Built-in exceptions are always more efficient than custom exceptions.

• Built-in exceptions are standard error types provided by the language, whereas custom exceptions are created by developers to handle specific situations.

How can you use the 'finally' clause in exception handling?

• The 'finally' clause can only be used with a try block that has no except blocks.

• The 'finally' clause ensures that specific code runs after try/except, regardless of exceptions.

• The 'finally' clause is optional and does not affect the execution flow.

• The 'finally' clause is used to catch exceptions before they are handled.

Give an example of a situation where you would need to raise an exception.

• Raising an exception when a user views their account details.

• Raising an exception when a user changes their password.

• Raising an exception when a user successfully logs in.

• Raising an exception when a user attempts to withdraw more than their account balance.