15+ Basic Python Interview Questions

by Mujeeb Shah |
  1. Python Basic Interview Question
  2. Is python a programming language or a scripting language?
  3. Why do you think python is known as an interpreted language?
  4. Define PEP 8?
  5. Explain to us the meaning of namespace in python language?
  6. Do cases matter in Python Language?
  7. Make us understand the terms "pickling" & "unpickling" in the simplest form?
  8. In python what functions are known as generators?
  9. Explain the simplest technique to convert string to all lowercase?
  10. What do you understand by Encapsulation in Python language?
  11. Do you agree that python numpy is recommended over lists? If yes, briefly explain why?
  12. Python Basic Coding Interview Questions
  13. Explain local & global variables?
  14. Explain the dogpile effect?
  15. When is the semaphore lock used?
  16. What do you understand by these terms?Split(),Sub(), Subn()
  17. Can a module be dynamically loaded in python language?
  18. What are PDB Commands?
  19. Upon exiting, what happens to the memory of the Python program?
  20. What is numpy array in python language & how is an empty numpy array created?
  21. Tell us the output of this code?
  22. Explain in simple words what is a negative index?
  23. Tips for python programmer interview
  24. Popular python blogs to follow
  25. Popular python books to read
  26. Popular python YouTube videos and channels
  27. Popular python forums
  28. Popular Python webinars
  29. Top companies to follow

In this blog we shall discuss about Python Basic Interview Questions also basic python coding interview questions, which shall help you get through a python job interview.

Python coding interviews can be sectioned into two major categories.

  • Python basic interview questions
  • Python coding interview questions.

Python Basic Interview Questions:

  1. Is python a programming language or a scripting language?

Python is a language that has a unique ability to script, however, python is universally considered to be a general-purpose programming language.

  1. Why do you think python is known as an interpreted language?

According to me, any language which isn't in a machine code level before runtime should be considered as an interpreted language. Thus, while the same happens with python, hence I feel it is an interpreted language.

  1. Define PEP 8?

Python enhancement proposal is provided guidelines for formatting python codes for better & clear readability.

  1. Explain to us the meaning of namespace in python language?

My understanding of namespace in python is that it is used to provide unique names to minimize or completely eradicate any naming conflicts.

  1. Do cases matter in Python Language?

Yes. Indeed python is a specific case sensitive language.

  1. Make us understand the terms "pickling" & "unpickling" in the simplest form?

According to me, the most simplest way of defining these terms are; pickling is wherein a module provided in python language understands a python object converting it to a simple string representation.

Whereas, unpickling is a process of retrieving these objects to its originality from a string representation.

  1. In python what functions are known as generators?

All those set of functions which have an iterable tendency are known as generators.

  1. Explain the simplest technique to convert string to all lowercase?

The simplest way of conversion of strings to lowercase is to use lower ().

  1. What do you understand by Encapsulation in Python language?

Encapsulation is a simple process of grouping together the data as well as the code. A simple example is the "Python class".

  1. Do you agree that python numpy is recommended over lists? If yes, briefly explain why?

Yes, according to me numpy is better than a list specifically because of its less space consumption, speed & it is much more convenient than a list.

Python Basic Coding Interview Questions:

  1. Explain local & global variables?

All those variables which can be grouped in global spaces or can be identified outside a function are known as global variables. There key salient being that these variables can be accessed by other function in a program.

Local Variable:
Contrary to the global variable, all the variables which can be identified within a function are known as local variables. Any variable which can be found in local space may not be found in global space which makes local variables unique.

  1. Explain the dogpile effect?

Expiring of caches of the website leads to an activity whenever a client or potential client hits the website. Every python professional finds ways to make sure cache values are refreshed every time the website cache expires.

  1. When is the semaphore lock used?

A semaphore lock is a process used to make sure that the dogpile effect is minimized. Whenever value expires, acquiring a lock is acquired first & then a new value is generated on a real-time basis.

  1. What do you understand by these terms?
    Split()
    Sub()
    Subn()

These are some of the methods of remodule in python language. I can try to define these terms more simply.

Split() is used to split various strings into lists. This method uses a regex pattern.

Sub() is used to identify substrings to match regex patterns & replaces them with an altogether a different string.

Subn() this method is quite similar to sub() method, subn() is used to return the new string & all the replacements made.

  1. Can a module be dynamically loaded in python language?

Yes, we can but dynamic loading usually is slow, as in this loading process we don't need to load a module till the time we don't need it. In python language, importlib module makes things more efficient & utilization of memory is better

import importlib module = importlib.importmodule('mypackage.mymodule')

  1. What are PDB Commands?

In python language, certain modules are used to debug various python programs through some interactive source codes. These codes collectively are called PDB commands. There major function being thorough checkup of various stack frames, the listing of source codes, setting conditional breakpoints.

  1. Upon exiting, what happens to the memory of the Python program?

When we exit from a python program, python deallocates everything except a few things. These things are as follows:

• Circular referenced modules
• Global namespaced objects
• C library reserves

  1. What is numpy array in python language & how is an empty numpy array created?

Numpy arrays are a collective grid of values, which are of same type & indexed by positive integers. The rank of a numpy array is determined by the number of dimensions, shape by integers.
An empty numpy array is created mostly by two commands.

  1. Import numpy
    Numpy.array([])

  2. Numpy.empty (shape=(0,0))

9). Tell us the output of this code?

import array

a = [4, 5, 6]
print a[-6]
print a[-5]
print a[-4]
The output of this code is 6,5,4.

  1. Explain in simple words what is a negative index?

The negative index is found in arrays & lists. Negative index starts from the end of the array & reads from the end, unlike positive index which reads from the starting of the list or array.

Also Read: Interview Questions & Answers Masterguide

Tips for python programmer interview

Learn the language in depth

Make sure before you go for an interview, you are well versed with in depth knowledge about python language & have a mastery over it. This shall help you in answering technical questions much confidently.

Certifications
Get online certifications to have an edge over other applicants. Online certification courses also provide a stronger ground for recruiters to prefer you over others.

Follow various python blogs & channels

Make sure you are following the right people professionally. Follow some of the best blogs, channels to get maximum insights about python language.

Learn the language in depth

Make sure before you go for an interview, you are well versed with in depth knowledge about python language & have a mastery over it. This shall help you in answering technical questions much confidently.

Follow various python blogs & channels

Make sure you are following the right people professionally. Follow some of the best blogs, channels to get maximum insights about python language.

Also Read: Interview Advice

Popular python blogs to follow

  1. PyFound
  2. Planet Python
  3. Py Charm
  4. Real Python
  5. Neopythonic
  6. Invent with Python
  7. Ned Batchelder
  8. Dev.To
  9. Mouse vs Python
  10. Py Bloggers

Popular python books to read

  1. Let Us Python
  2. Python: The Complete Reference
  3. Core Python Programming
  4. Python Tricks: A Buffet of Awesome Python Features
  5. Python: 3 Manuscripts in 1 Book
  6. Introduction to Machine Learning with Python
  7. Python for Data Analysis
  8. Python for Everybody
  9. Python Data Science Handbook
  10. Deep Learning with Python

Popular python YouTube videos and channels

  1. Python Tutorial for Beginners
  2. Python Tutorial for Beginners – Full Course
  3. Learn Python
  4. Google Developer Python Classes
  5. Python Full Course by Edureka
  6. Django Tutorial for Beginners
  7. Python Neural Networks for Beginners
  8. Ethical Hacking Using Python
  9. Introduction to Python (Hindi)
  10. Python Tutorial for Programmers

Popular python forums

  1. Python-Forum
  2. r/Python on Reddit
  3. Bytes
  4. Free Code Camp
  5. Hacker.io
  6. Python Anywhere
  7. Stack Overflow

Popular python webinars

  1. Edureka
  2. Enthought
  3. Techgig
  4. Wintellect
  5. HackerEarth

Top companies to follow

Here are some companies which are known for using Python in their functioning.

Popular companies:
Google , Netflix , Amazon, Pinterest , Spotify , Uber , YouTube , ClassyServe Technologies , Turbolab Technologies , Contus , Micropyramid , etc.

We hope that you find your dream job & this blog helps you crack that important interview like a pro

Best of luck!

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