PCEP Error Handling and Modules 2

Question 1

What is the difference between a module and a script in Python?

Accepted Answer

A module is imported for reuse; a script is executed directly

Answer

Modules are designed for importing while scripts are designed for direct execution, though the same file can serve both purposes.

Question 2

How does Python determine the search path for modules?

Accepted Answer

Through sys.path which includes current directory, PYTHONPATH, and installation directories

Answer

Python searches multiple locations in order as defined in sys.path.

Question 3

What is the purpose of __name__ == "__main__" in Python?

Accepted Answer

To run code only when the file is executed directly, not when imported

Answer

This guard ensures code runs only during direct execution, not when the file is imported as a module.

Question 4

What are built-in exceptions in Python?

Accepted Answer

Pre-defined exception classes like ValueError, TypeError, IndexError

Answer

Python provides a hierarchy of built-in exception classes for common error types.

Question 5

How do you create a custom exception in Python?

Accepted Answer

Define a class that inherits from Exception

Answer

Custom exceptions are created by defining a class that inherits from the Exception class or its subclasses.

(PCEP) Certified Entry-Level Python Programmer Practice Test