Final test csis 119

What is the output of the following script? a, b, c = 1, 2, 3 print(a) print(b) print(c) a. Compilation Error b. 6 c. 1 2 3 d. 123,123,123

1 2 3

How many values do Boolean data types contain? a. 3 b. 0 c. 1 d. 2

2

What is the output of running the following script? print (5 * 4) a. 9 b. 1 c. "5 * 4" d. 20

20

How do you write an inline comment in Python? a. >>>print(ans) # this is answer b. >>>print(ans) // this is answer c. >>>print(ans) $ this is answer d. >>>print(ans) /* this is answer*/

>>>print(ans) # this is answer

What do you call a saved file containing Python instructions? a. A template b. A module c. A class d. A function

A module

What is the correct syntax of a Python function?

B

What is the output of the following script: def myfunc(val): print("Hello " + val) myfunc("Python") myfunc("Ruby") myfunc("Java") a. Python Ruby Java b. Hello Python Hello Ruby Hello Java c. Python Python Python d. Hello Hello Hello

Hello Python Hello Ruby Hello Java

What is the output of the following script? x = 11 y = 22 if x == y: print("Inputs are equal"); else: print(:Inputs are different"); a. Inputs are different b. Inputs are equal c. Runtime error d. Compilation error

Inputs are different

What is an if statement? a. It is a statement that doesn't allow you to execute a block of code. b. It is a statement that allows you to execute a block of code when there is no condition. c. It is a statement that allows you to execute a block of code if a condition is undefined. d. It is a statement that allows you to execute a block of code if a condition is true.

It is a statement that allows you to execute a block of code if a condition is true.

What is a control statement? a. It is a structure that conditionally changes program flow b. It is a structure that explicitly changes program flow c. It is a statement that ends program flow d. It is a statement that executes different parts of code continuously

It is a structure that conditionally changes program flow

What is the output of the following script? for value in "Python": if value == "t": break print(value); a. P y b. h o n c. P y t d. P

P y

What is the order of operations while evaluating an expression? a. SADMEP b. PEASDM c. PMESDA d. PEMDAS

PEMDAS

What is the name of the output you get when an error occurs in your program? a. Exception b. Back trace c. Stack trace or traceback d. Error message

Stack trace or traceback

What type of value is returned by the input function? a. String b. Boolean c. Float d. Integer

String

What is the main difference between if and while? a. There is no difference between if and while. b. The if block is executed only once. The while block is executed multiple times. c. if and while are both executed multiple times. d. The while block is executed only once. if is executed multiple times.

The if block is executed only once. The while block is executed multiple times.

Which function can help generate a list of numbers? a. The list function b. The rnum function c. The rlist function d. The range function

The range function

Which statement is used in Python to return something to the caller of the function? a. The continue statement b. The compile statement c. The break statement d. The return statement

The return statement

What are parameters? a. They are pieces of information that need to be passed to a function for it to do its work. b. They are the objects of a class. c. They are the values that the function returns. d. They are arguments.

They are pieces of information that need to be passed to a function for it to do its work.

What are variables? a. They define the features of the object b. They define the object c. They refer to values in a memory d. They consist of a fixed value

They refer to values in a memory

Identify the incorrect statement: a. Undefined function and method arguments are defined through args b. Functions and methods return values through return statements c. main() is a special function d. Anonymous functions are also known as lambda expressions

Undefined function and method arguments are defined through args

What are local variables? a. Variables that are defined inside a function. b. Variables that are defined outside a function. c. Variables that are defined within another file. d. Variables that are defined within a program.

Variables that are defined inside a function.

What is the output of the following script? things = ["second"] things.insert(0, "first") print(things) a. ['second', '0'] b. ['first', 'second'] c. ['first', 'first'] d. ['0', 'second'

['first', 'second']

What is the output of the following script? I = list(range(10)) print(I) a. [2, 3, 4, 5, 6, 7, 8, 9, 10, 11] b. [0, 2, 4, 6, 8, 10] c. [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] d. [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Predict the correct script to get the following output. * ** ***

a

What is the output of the following script? class Car: def__init__(self): self._speed = 300 self._color = "black" car = Car() car._speed = 400 print(car._speed) a. 400 b. 200 c. 300 d. 100

a. 400

What is the output of the following script? class Person: def__init__(self, name): def speak(self): print("Hello! " + self.name) p = Person(("Python") p.speak() a. Hello! Python b. Hello. c. Hello Python d. Helloworld

a. Hello! Python

Which of the following statements is not true about OOP? a. In OOP, the data is not secure. b. OOP makes it easier to design software as you can model it in terms of real-world objects. c. OOP makes it easier to test, debug, and maintain code. d. OOP makes code reusable.

a. In OOP, the data is not secure.

Identify ways in which tuples are accessible: indexing, sorting, slicing, popping. a. Indexing and slicing b. Indexing and popping c. Slicing and sorting d. Indexing and sorting

a. Indexing and slicing

What is a dictionary? a. It is a data type that holds data or information in a key-value order. b. It is an instance of the dictionary class. c. It is a collection of items that are ordered and unchangeable. d. It is a collection of data items that are unordered and unique.

a. It is a data type that holds data or information in a key-value order.

What is the output of the following script? a = {"name": "Skandar Keynes", "age": "24", "sex": "male} b = a.setdefault("name") print(b) a. Skandar Keynes b. name c. male d. 24

a. Skandar Keynes

Which method allows you to access a subset, or a slice, of a tuple? a. Slicing b. Indexing c. Reversing d. Sorting

a. Slicing

Which of the following is not a built-in Python exception? a. StringError b. NameError c. ValueError d. AttributeError

a. StringError

Which statement is true about the copy() method of dictionaries? a. The copy() method is used to create shallow copies of dictionaries. b. The copy() method is used to create a new dictionary and delete the old dictionary. c. The copy() method is used to create multiple copies of dictionaries. d. The copy() method is used to create deep copies of dictionaries.

a. The copy() method is used to create shallow copies of dictionaries.

Which is the correct way to display an empty list? a. [] b. [2, 4, 6, 8] c. {} d. ["one", 2, "three", ["five", 6]]

a. []

Which function is used to remove all items from a list? a. clear() b. delete() c. pop() d. remove(item)

a. clear()

Which function can be used to show the usage information for a method? a. help() b. dir() c. main() d. enumerate()

a. help()

Which function is used to create a file object? a. open() b. read() c. write() d. append()

a. open()

What is the output of the following script? dictionary_masher = { "name": "Amos", "age": 100 } a. { 'name': 'Amos', 'age': 100 } b. { 'Amos': 'name', '100': age } c. { 'name': 'Amos", 'age': '100' } d. { name: Amos, age: 100 }

a. { 'name': 'Amos', 'age': 100 }

What are class methods? a. Class methods cannot be called through the class itself. b. Class methods are methods that are bound to the class. c. Class methods are methods that are bound to the object. d. Class methods have access to instance attributes.

b. Class methods are methods that are bound to the class.

Which of the following can occur/happen when a running program encounters invalid syntax? a. Python Specific Byte Code b. Exception c. Error d. Output

b. Exception

Which error occurs if a file you are attempting to read or write is not found? a. IndexError b. FileNotFoundError c. AttributeError d. NameError

b. FileNotFoundError

Which of the following statement is true about frozen sets? a. frozenset() is a user-defined function. b. Frozen sets are immutable in nature and do not support adding or removing of items. c. They are useful for holding items that change. d. Frozen set objects are never initialized.

b. Frozen sets are immutable in nature and do not support adding or removing of items.

What is the output of the following script? a = [1,2,3] print(a[3]) a. AttributeError b. IndexError c. NameError d. FileNotFoundError

b. IndexError

Identify which tuple method is used in the following script. a[1:5] a. Indexing b. Slicing c. Reversing d. Sorting

b. Slicing

Which error occurs when you type a line of code and the Python interpreter is unable to parse it? a. KeyError b. SyntaxError c. ImportError d. TypeError

b. SyntaxError

If you do not want to overwrite the existing file, which mode will you open your file in? a. rb b. a c. w d. w+

b. a

Which of the following is not a built-in list method a. append() b. destroy() c. insert() d. clear()?

b. destroy()

In the following code a = {1, 2, 3}, which method should we use to remove last item from the set but not return it? a. clear() b. remove() c. delete() d. pop()

b. remove()

What is the output of the following script? sports = ["baseball", "cricket", "soccer",] for x in sports: print(x) a. No output b. baseball cricket c. soccer d. baseball cricket soccer

baseball cricket soccer

Which function should you use to convert an integer into a binary number? a. oct() b. int() c. hex() d. bin()

bin()

Which statements are used to exit out of a loop? a. Only pass b. Only break c. break, continue, pass d. Only continue

break, continue, pass

What is a Python module? a. A collection of files of various extensions b. Any .txt file with Python method definitions c. Any .py file with valid Python statements d. Any .rb file with valid Python statements

c. Any .py file with valid Python statements

What is the output of the following script? a = [1,2,3] a.push(4) print(a) a. 1,2,3 b. 1 c. AttributeError d. 1,2,3,4

c. AttributeError

What is the output of the following script? person = { "name": "Rich Brown", "age": 56 } a. NameError b. IndexError c. KeyError d. FileNotFoundError

c. KeyError

Elements in lists are: a. Unordered and changeable b. Unordered and unchangeable c. Ordered and changeable d. Ordered and unchangeable

c. Ordered and changeable

How are ordered dictionaries (OrderedDict) different from a normal dictionary? a. OrderedDict does not maintain the order of keys, whereas a normal dictionary does. b. Both dictionaries are same in nature. c. OrderedDict maintains the insertion order of keys while a normal dictionary does not. d. Both dictionaries don't maintain any order.

c. OrderedDict maintains the insertion order of keys while a normal dictionary does not.

Which of the following is not a valid file opening mode? a. rb b. a c. R+ d. r

c. R+

What is another term for a derived class? a. Superclass b. Child class c. Subclass d. Base class

c. Subclass

Which built-in method identifies iterable elements in a tuple: count(), any(), max(), len()? a. count() b. max() c. any() d. len()

c. any()

Which is the correct syntax to create a class in Python? a. class classname; b. class classname{ c. class classname: d. class:

c. class classname:

Which keyword defines a code block, that must be executed before a try...except block exits, irrespective of whether any exception has occurred? a. final b. finalize c. finally d. elif

c. finally

Which keyword is used to raise an exception? a. def b. exception c. raise d. raised

c. raise

Identify the default arguments in the following script: def division(first, second=2): return first/second quotient = division(10) a. first b. first, second c. second d. There are no default arguments

c. second

Which method would you use to access the parent's original implementation of a method in a child's implementation of the same method? a. base() b. sub() c. super() d. parent()

c. super()

What is the output of the following script? a= {1, 2, 3, 4, 5, 6} b= {1, 2, 3, 7, 8, 9, 10} a. {1, 2, 3} b. {7, 8, 9, 10} c. {4, 5, 6} d. {4, 5, 6, 7, 8, 9, 10}

c. {4, 5, 6}

What is the output of the following script? string = "championships" print(string[0:5]) a. ships b. hampi c. champ d. pions

champ

Which method returns the number of occurrences of an item in a tuple? a. count() b. max() c. any() d. min()

count()

What is the difference between a class and an object? a. There is no difference between an object and a class. b. An object is a blueprint for creating a class and a class is an instance of an object. c. Objects define properties and methods/behaviors that a class should have. d. An object is an instance of a class while a class is the blueprint for creating an object.

d. An object is an instance of a class while a class is the blueprint for creating an object.

Special methods in Python classes are always prefixed and suffixed with double underscores. What are they called? a. Anonymous methods b. User-defined methods c. Built-in methods d. Dunder or magic methods

d. Dunder or magic methods

What is the use of the "with" context manager? a. It helps in writing shorter code. b. It is not used at all. c. It manually frees the resources when not required. d. It frees the resources automatically when the code exits.

d. It frees the resources automatically when the code exits.

Which error occurs when we import a non-existing module? a. AttributeError b. NameError c. FileNotFoundError d. ModuleNotFoundError

d. ModuleNotFoundError

Which object is used to manipulate files in Python? a. The integer object b. The string object c. The class object d. The file object

d. The file object

Which operation would you use on the following two sets to get the expected output? a= {1, 2, 3, 4, 5, 6} b= {1, 2, 3, 7, 8, 9, 10} Output: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} a. Difference b. Intersection c. Subsets d. Union

d. Union

Which method would you override when you want to change the output for a printed object? a. __init()__ b. __main()__ c. __del()__ d. __str__()

d. __str__()

Which operation would you use to add a data "F" to a given set? myset = {"A", "B", "C", "D", "E"}; a. insert() b. append() c. update() d. add()

d. add()

If there is a module named calculator containing resources such as add(), sub(), prod(), and div(), how would you import and use resources defined in that module? a. from calculator import add from calculator import sub from calculator import prod from calculator import div b. from calculator import all c. from calculator import; d. from calculator import *

d. from calculator import *

Which of the following is the correct syntax to read data from the "Mock_Data.csv" file? import csv with open('MOCK_DATA.csv', 'r') as f: mock_data_reader = csv.reader(f) line_count = 1 for row in mock_data_reader: if line_count > 1: print(row) line_count += 1

import csv with open('MOCK_DATA.csv', 'r') as f: mock_data_reader = csv.reader(f) line_count = 1 for row in mock_data_reader: if line_count > 1: print(row) line_count += 1

Which of the following is the correct script to write data to an 'example.csv' file? import csv with open('example.csv', 'w') as f: example_data_writer = csv.writer(f) example_data_writer.writerow(['name', 'age']) example_data_writerwriterow(['Steven', 25])

import csv with open('example.csv', 'w') as f: example_data_writer = csv.writer(f) example_data_writer.writerow(['name', 'age']) example_data_writerwriterow(['Steven', 25])

Which function can be used to convert strings to integers? a. dec() b. hex() c. bin() d. int()

int()

What are anonymous functions called in Python? a. Built-in functions b. User-defined functions c. Friend functions d. lambda functions

lambda functions

Which function do you call to check the number of items in a list? a. len() b. size() c. length() d. check()

len()

Which function do you call when you want to append an element at the end of a list? a. list.append() b. list.addatend() c. list.end() d. list.endswith()

list.append()

What is the output of the following script? fruits = ["apples", "bananas", "strawberries", "mangoes", "pears"] print(fruits[3]) a. pears b. strawberries c. mangoes d. bananas

mangoes

How can you write the expression "n = n * 2" using short-hand operators? a. n ^= 2 b. n *= 2 c. n /= 2 d. n -= 2

n *= 2

Which operator is used to concatenate two lists? a. - b. * c. << d. plus (+)

plus (+)

What command should you type in the interpreter to check your Python installation? a. py b. .py c. py.exe d. python

python

Which string function do you call when you want to convert the first letter in the string to uppercase? a. str.capitalize() b. str.lower() c. str.upper() d. str.startswith(

str.capitalize()

From the following list, identify the function that is not a built-in function in Python: a. write() b. help() c. input() d. print(

write()

What is the syntax for assigning a variable, x, to the value 8? a. x_8 b. x.8 c. var x = 8 d. x = 8

x = 8

Identify local and global variables in the following script: def myfunc(): x = 10; y = 20; a. x is the global variable, y is the local variable. b. x is the local variable, y is the global variable. c. Both x and y are local variables. d. Both x and y are global variables.

x is the local variable, y is the global variable.