Quiz 1: Questions

Q1.1.

[6 pts] What is displayed by the below sequence of Python statements?

k = 13

print 2 + k * 2

print k % 4

print 5 * (k / 5)

Q1.2.

[4 pts] What are the values referenced by a, b, and c following the execution of the below fragment?

a = 'x'

b = 'y'

c = 'z'



a = b

b = c

c = a + 'b'

Q1.3.

[6 pts] At right, tabulate the values taken on by each variable as the program fragment below executes.

k = 50

for i in range(6):

    j = 2 ** i

    if i % 2 == 0:

        k = j + k

Q1.4.

[6 pts] Assume year is an integer representing a year between 2001 and 2399. Below, complete the if statement so that it tests whether year represents a leap year. (Recall that leap years occur when the year is a multiple of 4 but not of 100. You don't need to worry about multiples of 400.)

if



    print year, 'is a leap year.'

Q1.5.

[8 pts] Complete the program so that it displays the characters of word in reverse order, one per line. Below is an illustration of how it should work.

Word? straw
w
a
r
t
s

word = raw_input('Word? ')

Quiz 1: Solutions

Q1.1.

28
1
10

Q1.2.

`a`:	'`y`'
`b`:	'`z`'
`c`:	'`yb`'

Q1.3.

`i`:		0,	1,	2,	3,	4,	5
`j`:		1,	2,	4,	8,	16,	32
`k`:	50,	51,		55,		71

Q1.4.

if year % 4 == 0 and year % 100 != 0:

    print year, 'is a leap year.'

Q1.5.

word = raw_input('Word? ')

for i in range(len(word)):

    print word[len(word) - 1 - i]

Alternative solution:

word = raw_input('Word? ')

for i in range(len(word) - 1, -1, -1):

    print word[i]