My little tour on Python Web Shops is over for now. It has been an excellent chance to see what is going on in the town. I have been applying mainly for a web developer position. Below is a list of few interview questions I have got. I will answer the most interesting or ones that require more in-depth research in the next articles.

Python

• What is Python
• Given a = 5; b = 5 What is the return of a is b
• Explain the difference between type vs isinstance
• What style guide can we use for code linting
• Explain the differences between Python 2 and Python 3
• How would you convince somebody to use Python 3 over Python 2
• Explain the difference in dict.items() between Python 2 and Python 3
• Can tuple always be a key in a dictionary
• Where do we use compiled files *.pyc
• What is GIL, mutex and semaphore
• Explain difference between __init__ and `__new__
• Where can we use keyword with
• What is mock, mocking
• How can we unit test connection with a database
• What is a generator, iterator
• Explain the difference between thread and coroutine
• How do you stay updated with Python language
• Explain difference between __str__ and __repr__
• What is the data model in Python
• How Python solves the diamond problem in multiple inheritance
• What is Method Resolution Order
• Explain what is circular import

Database

• What is transaction
• Explain the acronym ACID
• What is indexing

Django

• What is middleware
• What is context_processor
• What is and how works manage.py collectstatic
• How would you count webpage reloading in Django
• How to run a script in Django
• What design pattern is Django using
• Give a list of model relationships
• How would you model saving data from the user
• Django request - response vs async
• When I send an email through Django form, do I need to use celery for that
• When I have only 20 web workers, and a 21st user enters the webpage, will he be able to load the page?
• Describe caching in Django
• What is QuerySet, when it is loading
• Explain the difference between get and filter in QuerySet
• Write a model for one Manager and many Customers
• Given example models (Manager, Customer) write example querysets and convert them to SQL

Flask

• Write a context manager (login_required)
• Write a simple view that requires logged in user and test it

Web Development

• Explain the difference between TCP and UDP
• What is HTTP
• List and explain HTTP status codes, methods
• You go to example.com - describe what happens
• Describe caching in general (browser, servers, application)
• What is microservice
• List techniques for optimising web pages
• Redis, Celery - describe these libraries
• How SEO works (robots, meta)
• Javascript promises

Software Development

• Explain the difference between git rebase and git merge
• What is git bisect
• What is git stash
• How would you repair a broken branch
• What is TDD
• How would you architect and design a project from the start
• What is REST
• What is Agile
• What is DevOps
• Explain the difference between Agile and DevOps
• List common design patterns

Algorithm

• How would you count words in a text file that contains an ebook