wk8 - quiz.py

###
Question 1
How are "collection" variables different from normal variables?
Collection variables can only store a single value
Collection variables can store multiple values in a single variable
Collection variables merge streams of output into a single stream
Collection variables pull multiple network documents together

Answer: Collection variables can store multiple values in a single variable

Question 2
What are the Python keywords used to construct a loop to iterate through a list?
for / in
foreach / in
try / except
def / return

Answer: for/in

Question 3
For the following list, how would you print out 'Sally'?
friends = [ 'Joseph', 'Glenn', 'Sally' ]
print(friends[2])
print(friends[3])
print(friends[2:1])
print(friends['Sally'])

Answer: print(friends[2])

Question 4
What would the following Python code print out?
fruit = 'Banana'
fruit[0] = 'b'
print(fruit)
Nothing would print - the program fails with a traceback
b
banana
Banana
B

Answer: Nothing would print - the program fails with a traceback

Question 5
Which of the following Python statements would print out the length of a list stored in the variable data?
print(data.length())
print(len(data))
print(data.length)
print(strlen(data))
print(length(data))
print(data.Len)

Answer: print(len(data))

Question 6
What type of data is produced when you call the range() function?
x = range(5)
A boolean (true/false) value
A list of words
A list of integers
A string
A list of characters

Answer: A list of integers

Question 7
What does the following Python code print out?
a = [1, 2, 3]
b = [4, 5, 6]
c = a + b
print(len(c))
[1, 2, 3, 4, 5, 6]
[1, 2, 3]
21
[4, 5, 6]
15
6

Answer: 6

Question 8
Which of the following slicing operations will produce the list [12, 3]?
t = [9, 41, 12, 3, 74, 15]
t[12:3]
t[1:3]
t[2:2]
t[:]
t[2:4]

Answer: t[2:4]

Question 9
What list method adds a new item to the end of an existing list?
push()
index()
pop()
forward()
add()
append()

Answer: append()

Question 10
What will the following Python code print out?
friends = [ 'Joseph', 'Glenn', 'Sally' ]
friends.sort()
print(friends[0])
Joseph
Sally
Glenn
friends

Answer: Glenn