Python General

Question 1

What is Python’s memory model primarily based on?

Answer 1

Reference counting and garbage collection.

Question 2

True or False: Tuples are mutable in Python.

Answer 2

False.

Question 3

What is the syntax to create a list in Python?

Answer 3

Use square brackets, e.g., my_list = [].

Question 4

Fill in the blank: In Python, a ______ is an ordered collection of items.

Answer 4

list

Question 5

What is the main difference between lists and tuples in Python?

Answer 5

Lists are mutable; tuples are immutable.

Question 6

How do you define a string in Python?

Answer 6

Enclose characters in single or double quotes, e.g., ‘hello’ or “hello”.

Question 7

What is a class in Python?

Answer 7

A blueprint for creating objects that encapsulate data and functionality.

Question 8

True or False: Meta classes in Python are classes of classes.

Answer 8

True.

Question 9

What keyword is used to define a function in Python?

Answer 9

def

Question 10

What does the ‘len()’ function do?

Answer 10

Returns the number of items in an object.

Question 11

What will be the output of ‘str(123)’?

Answer 11

‘123’

Question 12

Which method is used to add an item to the end of a list?

Answer 12

append()

Question 13

Fill in the blank: A ______ is a collection of key-value pairs in Python.

Answer 13

dictionary

Question 14

What is the purpose of the ‘self’ parameter in class methods?

Answer 14

To refer to the instance of the class.

Question 15

True or False: Strings in Python are mutable.

Answer 15

False.

Question 16

What is the output of ‘5 in [1, 2, 3, 4, 5]’?

Answer 16

True.

Question 17

How can you create a tuple with one item?

Answer 17

Use a comma, e.g., my_tuple = (1,).

Question 18

What built-in function can convert a list to a tuple?

Answer 18

tuple()

Question 19

What is the difference between ‘==’ and ‘is’ in Python?

Answer 19

’==’ checks for value equality; ‘is’ checks for object identity.

Question 20

Fill in the blank: A ______ allows you to iterate over a sequence in Python.

Answer 20

for loop

Question 21

What does the ‘pop()’ method do in list?

Answer 21

Removes and returns the last item from the list.

Question 22

How do you define a meta class in Python?

Answer 22

By inheriting from type.

Question 23

True or False: You can concatenate two strings using the ‘+’ operator.

Answer 23

True.

Question 24

What is the primary use of the ‘with’ statement?

Answer 24

To wrap the execution of a block with methods defined by a context manager.

Question 25

What does the 'join()' method do for strings?

Answer 25

Concatenates a list of strings into a single string.

Question 26

Fill in the blank: The ______ method returns a new string with all occurrences of a substring replaced.

Answer 26

replace()

Question 27

How can you create a shallow copy of a list?

Answer 27

Using the list() constructor or slicing.

Question 28

What method can be used to sort a list in place?

Answer 28

sort()

Question 29

What is the output of 'type([])'?

Question 30

True or False: A list can contain items of different data types.

Answer 30

True.

Question 31

What is the method to convert a string to lowercase?

Answer 31

lower()

Question 32

Fill in the blank: The ______ method splits a string into a list.

Answer 32

split()

Question 33

What is the role of a constructor in a Python class?

Answer 33

To initialize an object's attributes.

Question 34

Which operator is used for list slicing?

Answer 34

[start:end]

Question 35

What does the 'extend()' method do for lists?

Answer 35

Adds elements from an iterable to the end of the list.

Question 36

What are the two main types of classes in Python?

Answer 36

Standard classes and meta classes.

Question 37

True or False: The 'id()' function returns the memory address of an object.

Answer 37

True.

Question 38

What is a class variable in Python?

Answer 38

A variable that is shared among all instances of a class.

Question 39

What does the 'map()' function do?

Answer 39

Applies a function to all items in an iterable.

Question 40

Fill in the blank: The ______ method removes the first occurrence of a value from a list.

Answer 40

remove()

Question 41

What is a lambda function in Python?

Answer 41

A small anonymous function defined with the 'lambda' keyword.

Question 42

How do you create a set in Python?

Answer 42

Use curly braces or the set() constructor, e.g., my_set = {1, 2, 3}.

Question 43

What does 'list comprehension' allow you to do?

Answer 43

Create a new list by applying an expression to each item in an iterable.

Question 44

True or False: Python uses zero-based indexing.

Answer 44

True.

Question 45

What is the output of 'len("Hello World")'?

Answer 45

11

Question 46

What is the purpose of the __init__ method in a class?

Answer 46

To initialize a new instance of the class.

Question 47

Fill in the blank: The ______ method is used to create a new instance of a class.

Answer 47

__new__

Question 48

What built-in function can be used to check if a key exists in a dictionary?

Answer 48

in

Question 49

What is the output of '"hello".capitalize()'?

Answer 49

'Hello'

Question 50

How can you delete an item from a dictionary?

Answer 50

Using the 'del' statement or the 'pop()' method.

Question 51

True or False: An empty list is considered False in a boolean context.

Answer 51

True.

Question 52

What does the 'any()' function do?

Answer 52

Returns True if any element of the iterable is True.

Question 53

Fill in the blank: The ______ method returns a list of the dictionary's keys.

Answer 53

keys()

Question 54

What is a generator in Python?

Answer 54

A function that returns an iterator using 'yield' instead of 'return'.

Question 55

What does the 'filter()' function do?

Answer 55

Creates an iterator from elements of an iterable for which a function returns True.

Question 56

True or False: Python's string methods modify the original string.

Answer 56

False.

Question 57

What is the output of '"Hello".find("e")'?

Answer 57

1

Question 58

How do you check the data type of a variable in Python?

Answer 58

Using the 'type()' function.

Question 59

What does the 'sorted()' function do?

Answer 59

Returns a new sorted list from the elements of any iterable.

Question 60

Fill in the blank: The ______ method returns the last item of a list without removing it.

Answer 60

[-1]

Question 61

What is the purpose of the 'pass' statement in Python?

Answer 61

To create a placeholder for future code.

Question 62

What is a docstring?

Answer 62

A string literal that documents a module, class, method, or function.

Question 63

True or False: The 'break' statement is used to exit a loop.

Answer 63

True.

Question 64

What does the 'enumerate()' function do?

Answer 64

Returns an iterator that produces pairs of index and value from an iterable.

Question 65

Fill in the blank: The ______ method returns a list of the dictionary's values.

Answer 65

values()

Question 66

What is the purpose of the 'return' statement in a function?

Answer 66

To exit the function and optionally pass back an expression to the caller.

Question 67

How do you create a multi-line string in Python?

Answer 67

By using triple quotes, either ''' or """.

Question 68

What does the 'slice' operator do?

Answer 68

Extracts a portion of a sequence.

Question 69

What is the output of '"abc".upper()'?

Answer 69

'ABC'

Question 70

What is the difference between a list and a set in Python?

Answer 70

Lists are ordered and allow duplicates; sets are unordered and do not allow duplicates.

Question 71

What is the output of '"Hello, World!".split(" ")'?

Answer 71

['Hello,', 'World!']

Question 72

True or False: A class can inherit from multiple classes in Python.

Answer 72

True.

Question 73

What does the 'zip()' function do?

Answer 73

Combines iterables into tuples based on their index.

Question 74

Fill in the blank: A ______ is a special method in Python that starts and ends with double underscores.

Answer 74

dunder method

Question 75

What is the purpose of the 'super()' function?

Answer 75

To call a method from a parent class.

Question 76

What is the output of '"abc".replace("a", "A")'?

Answer 76

'Abc'

Question 77

True or False: Python supports method overloading.

Answer 77

False.

Question 78

What is the output of 'list(range(5))'?

Answer 78

[0, 1, 2, 3, 4]

Question 79

What is the purpose of the 'isinstance()' function?

Answer 79

To check if an object is an instance of a class or a subclass thereof.

Question 80

Fill in the blank: The ______ method is used to convert a dictionary into a list of tuples.

Answer 80

items()

Question 81

What does the 'sort()' method do in place?

Answer 81

Sorts the elements of a list in ascending order.

Question 82

What is the output of '"Hello".endswith("o")'?

Answer 82

True.

Question 83

How do you handle exceptions in Python?

Answer 83

Using try-except blocks.

Question 84

What is the output of '"Hello".count("l")'?

Answer 84

2

Question 85

True or False: The 'continue' statement is used to skip the current iteration of a loop.

Answer 85

True.

Question 86

What does the 'list()' function do?

Answer 86

Converts an iterable into a list.

Question 87

What is the syntax to create a dictionary in Python?

Answer 87

Use curly braces, e.g., my_dict = {}.

Question 88

Fill in the blank: The ______ method is used to remove all items from a list.

Answer 88

clear()

Question 89

What is the output of '"abc".find("z")'?

Answer 89

-1

Question 90

What does the 'reversed()' function do?

Answer 90

Returns a reverse iterator of a sequence.

Question 91

What is the purpose of the 'assert' statement?

Answer 91

To test if a condition is true; raises an AssertionError if false.

Question 92

True or False: You can use the 'in' operator to check for membership in a string.

Answer 92

True.

Question 93

What is the output of '"Hello World".split()'?

Answer 93

['Hello', 'World']

Question 94

What is the primary purpose of a meta class?

Answer 94

To control the creation and behavior of classes.

Question 95

What does the 'callable()' function check?

Answer 95

If an object appears to be callable (like a function).