Exception Handling

What is the purpose of the with statement in Python for file handling?

A:

It raises exceptions

B:

It terminates the program

C:

It ensures proper resource cleanup

D:

It defines custom exception classes

Answer: C

The with statement is used for file handling in Python and ensures proper resource cleanup by automatically closing the file when the block is exited, even if an exception occurs.

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Consider the following Python code:

try:
    x = int("abc")
except ValueError as e:
    x = "Error: " + str(e)

What will be the value of "x" after the execution of this code?

A:

"Error: invalid literal for int() with base 10: 'abc'"

B:

"abc"

C:

0

D:

None

Answer: A

The try block attempts to convert the string "abc" to an integer, causing a ValueError. The except block captures the exception and assigns an error message to "x."

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What is the purpose of the sys.exc_info() function?

A:

To define custom exception classes

B:

To terminate the program immediately

C:

To retrieve information about the currently handled exception

D:

To raise exceptions intentionally

Answer: C

sys.exc_info() returns a tuple of information about the currently handled exception, including the type, value, and traceback.

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What is the purpose of the try, except, else, and finally blocks collectively?

A:

To define custom exception classes

B:

To terminate the program immediately

C:

To handle and catch exceptions, execute code when no exception occurs, and always execute code, respectively

D:

To raise exceptions intentionally

Answer: C

The combination of these blocks provides comprehensive exception handling in Python, allowing for handling exceptions, executing code when no exception occurs, and always executing code.

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Which of the following is a built-in exception in Python for handling errors related to importing modules that do not exist?

A:

ImportError

B:

ModuleNotFoundError

C:

NoSuchModuleError

D:

ModuleImportError

Answer: B

ModuleNotFoundError is raised when attempting to import a module that does not exist.

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Questions for: Exception Handling