CMU Unit 1 Practice Test

Front

Types of errors: Syntax Error, Logical Error, Runtime Error, Cascade Error. Which one is NOT a type of error?

Back

Cascade Error

Front

Logical Error

Back

Code runs, but doesn't do what we want it to do.

Front

Runtime Error

Back

Code follows the rules of Python and runs, but crashes after it starts.

Front

Syntax Error

Back

Code doesn't run because program doesn't follow the rules of Python.

Front

Which of the following has an error? Rect(50, 50, 200, 300, fill='dodgerBlue'), Line(0, 200, 400, 200), Circle(300, 200, 75, fill='crimson'), RegularPolygon(200 200 20 3)

Back

RegularPolygon(200 200 20 3)

Answer explanation

The Rect has no commas between the numbers. This command is not following the rules of Python - it is a syntax error!

Front

Which of the following has an error? Circle(200, 200, fill='black'), Line(0, 200, 400, 200, lineWidth=2) , Polygon(100, 100, 150, 150, 200, 200, fill='blue'), Rect(0,0,100,200,fill=None)

Back

Circle(200, 200, fill='black')

Answer explanation

The circle command takes a minimum of 3 inputs: Circle(centerX, centerY, radius). This was missing the radius number - a syntax error.

Front

Which of the following has an error? Polygon(100, 200, 300, 300, fill=None), Circle(-100, -100, 200, fill=gradient('red', 'orange', 'yellow', start='left-top')), Rect(350, 50, 50, 50, fill='blue', borderWidth=5), Polygon(150, 160, 180)

Back

Polygon(150, 160, 180)

Answer explanation

To draw a polygon with code, we write: Polygon(x1, y1, x2, y2, x3, y3, …). It must have an even number of coordinates! For this question, we wrote x1, y1,x2, but we forgot to put y2! This is not following the rules of Python - a syntax error.

Front

Which of the following has a logical error? We are trying to draw a blue circle centered at (300, 350). Options: Circle(300, 350, 40, fill='blue'), Oval(300, 350, 40, 40, fill='blue'), Oval(40, 40, 300, 350, fill='blue'), Circle(300, 350, 80, fill='blue')

Back

Oval(40, 40, 300, 350, fill='blue')

Answer explanation

Oval(40, 40, 300, 350, fill='blue) draws an oval centered at (40, 40) with a width and height of 300 and 350 respectively. The code runs, but it doesn't do what we want - a logical error!

Front

What's the name of the place where we write all of our code?

Back

IDE (Integrated Development Environment)

Front

What do we call this part of the IDE?

Back

Console

Answer explanation

The console is where Python sends messages to you. We normally use it to find out about an error in the code.