20 Most Important Concepts for Cracking Python Interview

What to prepare for Python’s technical interview?

Whether you are going to apply for a Python Developer role or if you are starting with python to build a new project, there are some crucial concepts of the language which will help you in every step of your progress.

Python is known for simplicity in its syntax and its great range of modules. The opportunities for python developers is vast and there is surprisingly less competition. That is the core reason why I had jumped to this language after spending three years working on Java.

From the countless number of interviews that I attended, I have curated a list of topics on which the questions are asked in most of the interviews if not all of them. Though the questions can get very tricky and in depth sometimes, knowing the basics of these topics always helped to find the correct solution.

Below is the list of those concepts and there are some amazing links to learn and master python at the end of this article.

1. Different data structures in python
   ~ List
   ~ Tuple
   ~ Set
   ~ Dictionary
2. Iterating over a dictionary and valid types of keys in dictionary
3. Zip function
4. Difference between arrays and list in python.
5. String manipulation and slicing operation
6. Regex
7. List comprehension
8. Lambda/anonymous functions
9. Filter, map, reduce functions
10. Generators
11. Decorators
12. Exception handling
13. Files input and output using with
14. Deep and shallow copy
15. Memory management in python
16. Modules in python
17. Local vs global variables
18. _init_
19. *args, **kwargs
20. Multithreading

Python’s official documentation is very precise and coherent, so going through that would be helpful to understand above concepts. But if you are someone who understands better visually than reading, then here are some useful links,

For absolute beginners into programming/python:
~ python for beginners

1. Data structures in python video
2. Documentation of DS

Comprehensions: Python Comprehensions
Generators in python: Python generators
Decorators: Python decorators
Multiprocessing in python: multiprocessing
File operations: Input/Output operations

The definitions of these concepts can be quite clear; however, you will need to understand them exceedingly to truly use them in your projects. The interviewers also ask tricky questions which can be answered only if you know the concepts thoroughly.

Hope this was helpful!!

Let me know if you would like me to write an article on most asked questions based on these topics of Python.