Chapter 8 Quiz >> Python Data Structures
1. How are “collection” variables different from normal variables?
- Collection variables can only store a single value
- Collection variables pull multiple network documents together
- Collection variables can store multiple values in a single variable
- Collection variables merge streams of output into a single stream
2.What are the Python keywords used to construct a loop to iterate through a list?
- try / except
- def / return
- for / in
- foreach / in
3. For the following list, how would you print out ‘Sally’?
friends = [ 'Joseph', 'Glenn', 'Sally' ]
- print(friends[‘Sally’])
- print(friends[2:1])
- print friends[3]
- print(friends[2])
4. What would the following Python code print out?
fruit = 'Banana'
fruit[0] = 'b'
print(fruit)
- B
- [0]
- b
- Banana
- banana
- Nothing would print – the program fails with a traceback error
5. Which of the following Python statements would print out the length of a list stored in the variable data?
- print(strlen(data))
- print(length(data))
- print(data.length)
- print(len(data))
- print(data.length())
- print(data.Len)
6. What type of data is produced when you call the range() function?
x = list(range(5))
- A string
- A list of integers
- A boolean (true/false) value
- A list of characters
- A list of words
7. What does the following Python code print out?
a = [1, 2, 3]
b = [4, 5, 6]
c = a + b
print(len(c))
- 21
- 6
- [4, 5, 6]
- [1, 2, 3, 4, 5, 6]
- [1, 2, 3]
- 15
8. Which of the following slicing operations will produce the list [12, 3]?
t = [9, 41, 12, 3, 74, 15]
- t[2:2]
- t[:]
- t[1:3]
- t[2:4]
- t[12:3]
9. What list method adds a new item to the end of an existing list?
- add()
- append()
- index()
- pop()
- forward()
- push()
10. What will the following Python code print out?
friends = [ 'Joseph', 'Glenn', 'Sally' ]
friends.sort()
print(friends[0])
- friends
- Glenn
- Sally
- Joseph