Question 1

Consider the following code snippet using Tkinter:

from tkinter import Tk, Canvas

root = Tk()

canvas = Canvas(root, width=200, height=200)

canvas.pack()

canvas.create_line(0, 0, 200, 200)

root.mainloop()

What does this script do when executed?

Options :

A : The script displays a window with a 200x200 canvas containing a line that goes from the top-right corner to the bottom-left corner.

B : The script displays a window with a 200x200 canvas, but it does not contain any shapes.

C : The script displays a window with a 200x200 canvas containing a circle.

D : The script displays a window with a 200x200 canvas containing a line that goes from the top-left corner to the bottom-right corner.

Answer: D

Question 2

What is PEP's preferred way of breaking lines with binary operators?

Options :

A :

income = (gross_wages +

taxable_interest +

(dividens - qualified_dividends) -

student_loan_interest)

B :

income = (gross_wages +

+ taxable_interest +

+ (dividens - qualified_dividends) -

- student_loan_interest)

C :

income = (gross_wages +

+ taxable_interest +

+ (dividens - qualified_dividends) +

- student_loan_interest)

D :

income = (gross_wages

+ taxable_interest

+ (dividens - qualified_dividends)

- student_loan_interest)

Answer: D

Question 3

What does self mean in a class implementation?

Options :

A : The word self is a Python keyword.

B : The word self represents a class. If we create a method bound to the whole class, we pass self as the first argument to the class method

C : The word self represents an instance of the class. Using the self keyword we can access class attributes and methods in Python. The name self is just a convention. When implementing an instance method, self must be passed as the first argument of the method.

Answer: C

Question 4

This method is responsible for converting an object's contents into a more or less readable string. You can redefine it if you want your object to be able to present itself in a more elegant form.

The above description applies to the...

Options :

A : __init__() method.

B :

__repr__() method.

C : __str__() method.

D : __new__() method.

Answer: C

Question 5