📌 Missing Value Imputation, Explained: A Visual Guide with Code Examples for Beginners

🗂 Category: MACHINE LEARNING

🕒 Date: 2024-08-27 | ⏱️ Read time: 13 min read

One (tiny) dataset, six imputation methods?

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📖 Compact Python cheat sheet covering setup, syntax, data types, variables, strings, control flow, functions, classes, errors, and I/O.

Link: https://discord.com/channels/942740928706281524/1423994784720359567/1424711790947864669

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1. What is the output of the following code?

x = [1, 2, 3]
y = x
y.append(4)
print(x)

2. Which of the following data types is immutable in Python?
A) List
B) Dictionary
C) Set
D) Tuple

3. Write a Python program to reverse a string without using built-in functions.

4. What will be printed by this code?

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

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

5. Explain the difference between == and is operators in Python.

6. How do you handle exceptions in Python? Provide an example.

7. What is the output of:

print(2 ** 3 ** 2)

8. Which keyword is used to define a function in Python?
A) def
B) function
C) func
D) define

9. Write a program to find the factorial of a number using recursion.

10. What does the *args parameter do in a function?

11. What will be the output of:

list1 = [1, 2, 3]
list2 = list1.copy()
list2[0] = 10
print(list1)

12. Explain the concept of list comprehension with an example.

13. What is the purpose of the __init__ method in a Python class?

14. Write a program to check if a given string is a palindrome.

15. What is the output of:

a = [1, 2, 3]
b = a[:]
b[0] = 10
print(a)

16. Describe how Python manages memory (garbage collection).

17. What will be printed by:

x = "hello"
y = "world"
print(x + y)

18. Write a Python program to generate the first n Fibonacci numbers.

19. What is the difference between range() and xrange() in Python 2?

20. What is the use of the lambda function in Python? Give an example.

#PythonQuiz #CodingTest #ProgrammingExam #MultipleChoice #CodeOutput #PythonBasics #InterviewPrep #CodingChallenge #BeginnerPython #TechAssessment #PythonQuestions #SkillCheck #ProgrammingSkills #CodePractice #PythonLearning #MCQ #ShortAnswer #TechnicalTest #PythonSyntax #Algorithm #DataStructures #PythonProgramming

By: @DataScienceQ 🚀

📌 How To Learn AI (Roadmap)

🗂 Category: ARTIFICIAL INTELLIGENCE

🕒 Date: 2024-08-05 | ⏱️ Read time: 11 min read

A full breakdown of how you can learn AI this year effectively

1. What is the output of the following code?

x = [1, 2, 3]
y = x
y[0] = 4
print(x)

2. Which of the following is NOT a valid way to create a dictionary in Python?
A) dict(a=1, b=2)
B) {a: 1, b: 2}
C) dict([('a', 1), ('b', 2)])
D) {1: 'a', 2: 'b'}

3. Write a function that takes a list of integers and returns a new list containing only even numbers.

4. What will be printed by this code?

def func(a, b=[]):
    b.append(a)
    return b
print(func(1))
print(func(2))

5. What is the purpose of the __slots__ attribute in a Python class?

6. Which built-in function can be used to remove duplicates from a list while preserving order?

7. Explain the difference between map(), filter(), and reduce() with examples.

8. What does the @staticmethod decorator do in Python?

9. Write a generator function that yields Fibonacci numbers up to a given limit.

10. What is the output of this code?

import copy
a = [1, 2, [3, 4]]
b = copy.deepcopy(a)
b[2][0] = 5
print(a[2][0])

11. Which of the following is true about Python’s GIL (Global Interpreter Lock)?
A) It allows multiple threads to execute Python bytecode simultaneously.
B) It prevents race conditions in multithreaded programs.
C) It limits CPU-bound multi-threaded performance.
D) It is disabled in PyPy.

12. How would you implement a context manager using a class?

13. What is the result of bool([]) and why?

14. Write a recursive function to calculate the factorial of a number.

15. What is the difference between is and == in Python?

16. Explain how Python handles memory management for objects.

17. What is the output of this code?

class A:
    def __init__(self):
        self.x = 1

class B(A):
    def __init__(self):
        super().__init__()
        self.y = 2

obj = B()
print(hasattr(obj, 'x') and hasattr(obj, 'y'))

18. Describe the use of *args and **kwargs in function definitions.

19. Write a program that reads a text file and counts the frequency of each word.

20. What is monkey patching in Python and when might it be useful?

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By: @DataScienceQ 🚀

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