RegularPython – Python + AWS Data Engineer + AI +GenerativeAi + AgenticAI

1). What will be the output of the following code??

def func(a, b=[]):
    b.append(a)
    return b

print(func(1))
print(func(2))

A) [1] [1, 2]

B) [1] [2]

C) [1, 2] [2, 3]

D) [1, 2] [1, 2, 3]

2). Which of the following methods is used to create a shallow copy of a list in Python??

x = [1, 2, 3]
y = x.copy()

A) copy()

B) shallowcopy()

C) deepcopy()

D) clone()

3). What is the output of the following code??

a = [1, 2, 3]
b = [4, 5]
print([a[i] + b[i] for i in range(min(len(a), len(b)))])

A) [5, 7]

B) [5, 7, 3]

C) [5, 7, 9]

D) Error

4). Which of the following is true about the GIL (Global Interpreter Lock) in Python??

import threading

def worker():
    print("Working...")

for _ in range(3):
    thread = threading.Thread(target=worker)
    thread.start()

A) It allows only one thread to execute at a time in the interpreter.

B) It allows multiple threads to execute in parallel.

C) It is used to handle multithreading in Python.

D) It allows Python to use multiple cores of the CPU.

5). What will be the output of the following code??

def f(a, b, *args, **kwargs):
    print(a, b, args, kwargs)

f(1, 2, 3, 4, x=5, y=6)

A) 1 2 (3, 4) {'x': 5, 'y': 6}

B) 1 2 [3, 4] {'x': 5, 'y': 6}

C) 1 2 {3, 4} [x: 5, y: 6]

D) 1 2 3 4 {'x': 5, 'y': 6}

6). What is the result of the following code??

from collections import Counter
c = Counter(['a', 'b', 'c', 'a', 'b', 'b'])
print(c.most_common(1))

A) [('b', 3)]

B) [('a', 2)]

C) [('c', 1)]

D) [('b', 2)]

7). How can you handle the `KeyboardInterrupt` exception in Python??

try:
    while True:
        pass
except KeyboardInterrupt:
    print("Interrupted!")

A) Using try-except block

B) Using signal handling

C) Using os.exit()

D) Using finally block

8). What is the output of the following code??

def f(x, y):
    return x + y

result = (lambda x, y: x * y)(2, 3)
print(result)

A) 6

B) 5

C) None

D) Error

9). What is the main use of Python's `os.path` module??

import os

print(os.path.join('folder', 'file.txt'))

A) Working with file paths

B) Executing operating system commands

C) Managing process IDs

D) Handling environment variables

10). What is the difference between `str()` and `repr()` methods in Python??

class Example:
    def __str__(self):
        return "str method"
    def __repr__(self):
        return "repr method"

print(str(Example()))
print(repr(Example()))

A) `__str__()` is for end users, `__repr__()` is for developers.

B) `__str__()` is for developers, `__repr__()` is for end users.

C) `__str__()` is for debugging, `__repr__()` is for logging.

D) Both methods are used interchangeably.

11). Which of the following is an immutable data type in Python??

x = (1, 2, 3)
y = [1, 2, 3]
z = {'a': 1, 'b': 2}

A) Tuple

B) List

C) Dictionary

D) Set

12). How can you generate random numbers in Python??

import random

print(random.randint(1, 10))

A) Using `random.randint()`

B) Using `os.random()`

C) Using `math.random()`

D) Using `sys.random()`

13). What is the purpose of Python's `@staticmethod` decorator??

class MyClass:
    @staticmethod
    def my_static_method():
        return "Hello, World!"

print(MyClass.my_static_method())

A) Defines a method that belongs to the class, not instances of the class.

B) Defines a method that can access and modify the state of the class.

C) Defines a method that must be overridden in subclasses.

D) Defines a method that automatically manages memory.

14). What is the output of the following code when using list comprehension??

matrix = [[1, 2], [3, 4], [5, 6]]
flat = [num for row in matrix for num in row]
print(flat)

A) [1, 2, 3, 4, 5, 6]

B) [[1, 2], [3, 4], [5, 6]]

C) [1, 3, 5, 2, 4, 6]

D) [[1, 3, 5], [2, 4, 6]]

15). What is the result of the following code??

def f(x=[]):
    x.append(1)
    return x

print(f())
print(f())

A) [1] [1, 1]

B) [1] [1]

C) [1, 1] [1, 1]

D) [1, 1] [1]

16). How do you check if an object is an instance of a particular class in Python??

class MyClass:
    pass

obj = MyClass()
print(isinstance(obj, MyClass))

A) Using `isinstance()`

B) Using `issubclass()`

C) Using `type()`

D) Using `id()`

17). What is the purpose of the `with` statement in Python??

with open('file.txt', 'w') as f:
    f.write('Hello, World!')

A) Simplifies exception handling and ensures resources are properly managed.

B) Used for multithreading.

C) Used for asynchronous programming.

D) Creates a loop block.

18). What is the output of the following generator expression??

gen = (x ** 2 for x in range(3))
for i in gen:
    print(i)

A) 0 1 4

B) 1 4 9

C) 2 4 6

D) 0 1 2

19). How can you prevent a function from being overridden in a subclass??

class MyClass:
    def final_method(self):
        pass

# Attempt to override
class MySubClass(MyClass):
    def final_method(self):
        pass

A) Using the `@final` decorator (Python 3.8+).

B) Using `@override` decorator.

C) Using `@staticmethod` decorator.

D) Using `@classmethod` decorator.

20). What is the purpose of the `assert` statement in Python??

def test(x):
    assert x > 0, "Value must be positive!"

print(test(-1))

A) To test if a condition is true, and raise an error if not.

B) To catch exceptions.

C) To handle memory management.

D) To perform input/output operations.

Online Test

1). What will be the output of the following code??

2). Which of the following methods is used to create a shallow copy of a list in Python??

3). What is the output of the following code??

4). Which of the following is true about the GIL (Global Interpreter Lock) in Python??

5). What will be the output of the following code??

6). What is the result of the following code??

7). How can you handle the `KeyboardInterrupt` exception in Python??

8). What is the output of the following code??

9). What is the main use of Python's `os.path` module??

10). What is the difference between `str()` and `repr()` methods in Python??

11). Which of the following is an immutable data type in Python??

12). How can you generate random numbers in Python??

13). What is the purpose of Python's `@staticmethod` decorator??

14). What is the output of the following code when using list comprehension??

15). What is the result of the following code??

16). How do you check if an object is an instance of a particular class in Python??

17). What is the purpose of the `with` statement in Python??

18). What is the output of the following generator expression??

19). How can you prevent a function from being overridden in a subclass??

20). What is the purpose of the `assert` statement in Python??

Test Results

Online Test

1). What will be the output of the following code??

2). Which of the following methods is used to create a shallow copy of a list in Python??

3). What is the output of the following code??

4). Which of the following is true about the GIL (Global Interpreter Lock) in Python??

5). What will be the output of the following code??

6). What is the result of the following code??

7). How can you handle the `KeyboardInterrupt` exception in Python??

8). What is the output of the following code??

9). What is the main use of Python's `os.path` module??

10). What is the difference between `__str__()` and `__repr__()` methods in Python??

11). Which of the following is an immutable data type in Python??

12). How can you generate random numbers in Python??

13). What is the purpose of Python's `@staticmethod` decorator??

14). What is the output of the following code when using list comprehension??

15). What is the result of the following code??

16). How do you check if an object is an instance of a particular class in Python??

17). What is the purpose of the `with` statement in Python??

18). What is the output of the following generator expression??

19). How can you prevent a function from being overridden in a subclass??

20). What is the purpose of the `assert` statement in Python??

Test Results

10). What is the difference between `str()` and `repr()` methods in Python??