Question

Question 17

Demonstrate your knowledge of if, elif and else:

Create a variable gpa. Set it to a number between 0 and 4.0

Write python statements which produce one line of output -just one of the below

You are a great student!

You are a good student!

You really need to study more!

You choose the thresholds between 0 and 4.0 which determine the outputs.

Question 18 (Multiple Choice)

pizza_toppings = []

if pizza_toppings:

(a)This evaluates to true because there is a variable pizza_toppings

(b)This evaluates to false because there is not a variable pizza_toppings

(c)This evaluates to true because the list contains the null element.

(d)This evaluates to false because the list is empty.

  Question 20

Write a list comprehension which will do the same work as the below 3 statements:

squares = []

for i in range(10):

     squares.append(i * i)

Answer 1

Question 18:

Source Code:

Output:

Code in text format (See above image of code for indentation):

#set variable gpa to 2.0
gpa=2.0
#choose the thresholds between 0 and 4.0
if(gpa<=2.0):
print("You really need to study more!")
#print statement based on condition
elif(gpa>3.0):
print("You are a great student!")
else:
print("You are a good student!")

Question 19:

(b)This evaluates to false because there is not a variable pizza_toppings

The given if condition raises an EOF parsing error because if condition checks for a variable pizza_toppings but it is a list so the above is the correct one.

Question20 :

Source Code:

Output:

Code in text format (See above image of code for indentation):

#using list comprehension
squares=[x*x for x in range(10)]
#print list
print (squares)