Lecture 10 – Systematic Debugging (ENGR 102)

Which of the following is NOT a type of coding error discussed in the lecture?

Memory assignment error

What type of error prevents code from running at all?

Syntax error

Which error type occurs during execution, often called an “exception”?

Run-time error

Which error allows the program to run but gives incorrect results?

Logic error

What Python structure is used to handle run-time errors gracefully?

try–except

What keyword begins a block of code you want to test for exceptions?

try

What is an example of a run-time error?

Dividing by zero

Which of the following is NOT a common exception type listed in the lecture?

OverflowWarning

What is a "bug" in programming?

A problem or defect in a program

What does the acronym DRIFT stand for in debugging?

Discover, Reproduce, Isolate, Fix, Test

What is the purpose of the “isolate” step in DRIFT?

To find the exact line or area where the bug occurs

What tool lets you pause code at specific points to inspect variables?

Breakpoint

What debugger action executes the next line but does NOT enter a function call?

Step-over

What debugger action executes the next line and goes inside any function call?

Step-into

What does the “Variable Explorer” in a debugger show?

Current variables and their stored values

What is “rubber duck debugging”?

Explaining your code line-by-line to find logic mistakes

What is the purpose of the assert statement?

To perform sanity checks during debugging

What happens if an assert condition evaluates to False?

An AssertionError is raised and the program stops

What should you do with assert statements in final code?

Comment them out or remove them

What is the main idea of debugging according to the lecture?

Use a systematic process to find, isolate, and fix errors