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Top 50+ Python Interview Questions You Must Prepare In 2023
Go through these top Python interview questions and answers to land your dream job in Data Science, Machine Learning, or Python coding.
sample coding snippets with answers are embedded on topics such as string, list, dictionary, generator, decorators, OS module, files, LEGB, code optimization tricks, and OOPs concepts,
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Question & Answers Short Notes
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Coding Snippets
Learner Landmark
Feb 18, 20233 min read
9 things to know to Master List Comprehension in Python
List comprehension offers a shorter syntax when you want to create a new list based on the values of an existing list. A pair of square...
266 views0 comments
Nazeeruddin
Feb 11, 20232 min read
Map, Filter, Reduce in Python
map is used to apply a transformation to every element in an iterable.
filter is used on an iterable to keep only certain elements.
255 views0 comments
Nazeeruddin
Feb 7, 20232 min read
Data Types in Python
There are some fundamental or built-in data types in Python.
int, float, complex, bool, str, list, tuple set, frozenset, dict...
312 views0 comments
Nazeeruddin
Feb 7, 20231 min read
Python Object Serialization and Deserialization with Pickle
Pickle module implements binary protocols for serializing and de-serializing a python object structure.
154 views0 comments
Nazeeruddin
Feb 2, 20233 min read
Memory Management in Python
How to get the memory address of a Python object?
How garbage collection implemented in Python?
How does Python optimize memory usage?
329 views0 comments
Nazeeruddin
Jan 31, 20232 min read
Working with JSON data in python
Python ships with a powerful and elegant JSON library to help you decode and encode JSON.
json.loads(from_string)
json.load(from_file_obj)
120 views
Learner Landmark
Jan 29, 20231 min read
Property Decorators - Setters, Getters, and Deleters
How to define a property in python?
@property decorator will define a setter, getter, and deleter methods.
137 views0 comments
Nazeeruddin
Jan 28, 20232 min read
Dunder or Special Methods in python
Special methods are called by special syntax (such as arithmetical operations). This is the python approach for operator overloading.
120 views0 comments
Nazeeruddin
Jan 27, 20231 min read
str() vs repr() in python
str (), and repr () both are used to get string representation of the object.
__str__ is to be readable.
__repr__ is to be unambiguous.
151 views
Nazeeruddin
Jan 26, 20234 min read
OOPs in Python - Creating classes and objects
OOPs concepts in python explained with simple code snippets. It's a must-read article to crack any interview in python.
197 views0 comments
Nazeeruddin
Jan 24, 20232 min read
What is Generator in Python? Why should you use Generators?
Generator functions allow you to declare a function that behaves like an iterator.
157 views
Nazeeruddin
Jan 21, 20232 min read
OS Module in Python for Handling Files and Directories?
OS Module allows us to access functionality of the underlying operating system.
os.lisdir(), os.scandir(), os.walk(), glob.glob(...)
103 views
Nazeeruddin
Jan 19, 20232 min read
File Handling in Python?
open() method to open a file, first parameter is file_name, and second parameter is mode.
Recommended way to open a file is using "with"
191 views
Nazeeruddin
Jan 18, 20231 min read
__new__ vs __init__ when to use in Python?
The __new__ () creates a new instance.
The __init__ () method initializes that instance.
How to create a singleton class in python?
242 views
Nazeeruddin
Jan 17, 20232 min read
Python Dictionary Tricks That Make Your Code Elegant
This article will introduce the dictionary operation tricks that are used by senior python engineers. UNION operator to merge...
162 views
Nazeeruddin
Jan 16, 20231 min read
Passing Arguments to Python Function call-by-value or call-by-ref?
The terminologies like call-by-value and call-by-reference are commonly using in C, C++ and other programming languages. some people may...
91 views
Nazeeruddin
Jan 14, 20232 min read
Python variables scope or namespace by the LEGB Rule?
What is LEGB Rule?
Explain Python variable scope (or namespace)?
Difference between global and nonlocal variables in python?
121 views
Nazeeruddin
Jan 13, 20231 min read
Python class instance methods, class methods, and static methods
Python class can have 3 types of methods. instance methods methods that are bound to an instance. Instance method called on an instance...
60 views
Nazeeruddin
Jan 12, 20233 min read
Python code optimization, and Built-in Decorators
@lru_cache speed up your program by caching, This decorator can be used to cache the results of a function, so that subsequent calls to...
92 views
Learner Landmark
Jan 10, 20231 min read
Python - List Comprehension?
List comprehension is a short syntax for creating a new list based on the values of an existing list. ### OUTPUT [1, 4, 9, 16, 25, 36,...
57 views
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