Python

Question 1

The language’s name isn’t about snakes, but about the popular British comedy troupe ___ (from the 1970s).

Answer 1

Monty Python

Question 2

He is a Dutch programmer best known as the creator of the Python programming language, for which he was the “benevolent dictator for life” (BDFL) until he stepped down from the position on 12 July 2018.

Answer 2

Guido Van Rossum

Question 3

Which of the following would result in an error?

A. num = 5
if num > 3: print(“greater”); print (“lesser”)

B. if 5 > 3: print(greater); print (lesser)

C. #if 5 > 3: print(greater); print (lesser)

D. if 5 > 3:
print(“greater”)
print (“lesser”)

Answer 3

B. if 5 > 3: print(greater); print (lesser)

Question 4

Which of the following print() function invocations will cause a SyntaxError?

A. print(‘Greg\ ‘s book.’)
B. print(“‘Greg’s book.’”)
C. print(‘“Greg's book.”’)
D. print(“Greg's book.”)
E. print(‘“Greg’s book.”’)

Answer 4

E. print(‘“Greg’s book.”’)

Question 5

You need a colon at the end of every block of code in Python.

true or false?

Answer 5

false

Question 6

Which shortcut key is used to quickly comment or uncomment multiple lines of code?

Answer 6

CTRL + /

Question 7

Which of the following names are illegal in Python?

enumerate 3

Answer 7

• starting with a number
• has space
• not descriptive

Question 8

What is the output of the following snippet if the user enters two and four respectively?

x = int(input())
y = int(input())

x = x/y
y = y/x

print(y)

Answer 8

8.0

Question 9

This method adds an element at a given position in the list.

Answer 9

insert()

Question 10

Which version of Python uses ordered dictionaries?

Answer 10

Version 3.7

Question 11

What is the output of the following snippet?

x = 1
y = 1.0
z = “1”

if x == y:
print(“one”)
if y == int(z):
print(“two”)
elif x == y:
print(“three”)
else:
print(“four”)

Answer 11

one
two

Question 12

Which logical operator is used to check if at least one of two conditions is True?

Answer 12

or

Question 13

With list comprehension you will have to write a for statement with a conditional test inside.

true or false?

Answer 13

false

Question 14

Which shortcut key is used to terminate your program in an infinite loop?

Answer 14

CTRL + C

Question 15

The ____ keyword catches anything which isn’t caught by the preceding conditions.

Answer 15

else

Question 16

What is the output of the following snippet?

for i in range(0, 6, 3):
print(i, end=” “)

Answer 16

0 3

Question 17

What is the output of the following snippet?

n = 3

while n>0:
print(n+1, end=”:”)
n -= 1
else:
print(n)

Answer 17

4:3:2:0

Question 18

How do you check the current installed version of Python in your system? (what to type in the command prompt)

Answer 18

python –version

Question 19

This acts as a placeholder in for loops.

Answer 19

pass

Question 20

If the condition is False

 * the code inside \_\_\_\_ keyword is executed 

 * the code inside \_\_\_\_ keyword is skipped

answer, answer

Answer 20

else, if

Question 21

What is the output of the following snippet?

print(“String #1”)
print(“String #2)

Answer 21

String #2

Question 22

What keyword is Python’s way of saying “if the previous condition were not true, then try this condition”?

Answer 22

elif

Question 23

What is the output of the following snippet?

This is
a multiline
comment. #

print(“Hello!”)

Answer 23

Syntax Error: invalid syntax

Question 24

What is the expected output of the following snippet?

print((2*4.), (2%4), (2**3))

Answer 24

8, 2, 8

Question 25

This mode appends to a file and creates the file if it does not exist or overwrites an existing file.

Answer 25

a

Question 26

The attributes inside the class is called _____

Answer 26

variables

Question 27

What is the correct syntax of printing all variables and function names of a module?

Answer 27

dir

Question 28

These arguments allow you to pass multiple non-key arguments.

Answer 28

arbitrary

Question 29

A package in python is a container that contains various functions to perform specific tasks.

true or false?

Answer 29

true

Question 30

A user-defined blueprint or prototype from which objects are created.
*

Answer 30

class

Question 31

Which of the following is a valid lambda function in Python?

A. lambda x: x * 2, y
B. lambda (x, y): x + y
C. lambda x, y: x + y
D. lambda x y: x + y

Answer 31

C. lambda x, y: x + y

Question 32

To delete a file, you must import the OS module, and run its_______

Answer 32

os.remove()

Question 33

What is python’s package manager?

Answer 33

pip

Question 34

This type of polymorphism is used in dynamic languages such as Python, Perl, Ruby, PHP, and Javascript.

Answer 34

duck typing

Question 35

How many types of __init__() constructor are there based on the report?

Answer 35

3

Question 36

What is the correct syntax of importing only a specific function or variable?

Answer 36

from

Question 37

The “___” method will overwrite the entire file.

Answer 37

w

Question 38

True or False: Derived class is the other term for the Parent class and Base class is the other term for Child Class.

true or false?

Answer 38

false

Question 39

Which keyword is used to define a lambda function in Python?

Answer 39

lambda

Question 40

Can a lambda function have multiple expressions?

Answer 40

No, it can only have a single expression.

Question 41

What do you call a function in inheritance that makes the child inherit all the properties from its source?

Answer 41

super() function

Question 42

What package is installed to send http requests to APIs?

Answer 42

requests

Question 43

To delete an entire folder, use the ______

Answer 43

os.rmdir()

Question 44

In child class, we use this instead of pass. What do you call this function?

Answer 44

__init__() function

Question 45

To define a function, you need to type _____ followed by a unique function name.

Answer 45

def

Question 46

To write to an existing file, you must add a parameter to the _______ function:

Answer 46

open()

Question 47

In order to overload operators, you must define their corresponding special methods in your class.

true or false?

Answer 47

true

Question 48

What is the built-in function to open a file in Python?

Answer 48

open()

Question 49

It is a good practice to always _________ the file when you are done with it.

Answer 49

close()

Question 50

This type of polymorphism needs to have at least two classes.

Answer 50

Method Overriding

Question 51

In Python, you can return one line in a file by using the _________ method:

Answer 51

readline()

Question 52

When combining positional arguments and keyword arguments, you must put _______ arguments first.

Answer 52

positional

Question 53

The os.remove module can remove a file or file path but cannot delete a directory.

true or false?

Answer 53

true

Question 54

remove all elements from the dictionary

Answer 54

clear()

Question 55

returns a copy of the dictionary

Answer 55

copy()

Question 56

returns a dictionary with the specified keys and value

Answer 56

fromkeys()

Question 57

returns the value of the specified key

Answer 57

get()

Question 58

returns a list containing a tuple for each key value pair

Answer 58

items()

Question 59

returns a list containing the dictionary’s keys

Answer 59

keys()

Question 60

removes the element with the specified key

Answer 60

pop()

Question 61

removes the last inserted key-value pair

Answer 61

popitem()

Question 62

returns value of specified key; if key does not exist: insert the key with the specified value

Answer 62

setdefault()

Question 63

updates dictionary with the specified key-value pairs

Answer 63

update()

Question 64

returns a list of all values in the dictionary

Answer 64

values()

Question 65

mechanism that allows you to create a hierarchy of classes that share a set of properties and methods by deriving a class from another class.

Answer 65

inheritance

Question 66

With inheritance, there are two classes that we need to take note of:

Answer 66

1. Parent Class or Base Class - the class being inherited from
2. Child Class or Derived Class - the class that inherits from another class

Question 67

most basic form of inheritance, wherein the child inherits from a single parent

Answer 67

Single Inheritance

Question 68

occurs when there are two or more parent classes from which a child class may inherit.

Answer 68

Multiple Inheritance

Question 69

the ability for a child class to be the parent class of another. Thus, to stretch the analogy, we have a grandparent, parent, child relationship that describes multilevel inheritance.

Answer 69

Multilevel Inheritance

Question 70

resembles the classic hierarchical structure of an organisation tree. It has a parent with multiple children.

Answer 70

Hierarchical Inheritance

Question 71

is simply an amalgam of the other types of inheritance

Answer 71

Hybrid Inheritance

Question 72

Python also has the ___ function that will make the child class inherit all the methods and properties from its parent

Answer 72

super()