So how difficult it can be to find a Python developer?
How do you determine if he or she is, in fact, in the top one percent of candidates? Well, it’s easy if the goal is to just find someone who has simply listed Python on their resume. But if the goal is to find a great Python developer, then the challenge is difficult one.
Hiring a Python developer requires precise preparation and a careful approach, a well-defined and well-planned hiring process. This article has interview question for experienced python developers and some tips on how you could identify the best python developers.
Look for the Python Developer Skills Set
This is nowhere a complete list of skills hiring managers might be looking for in a Python developer. But, these are the basic skills required for a Python developer.
Must have Skills
Core Python (I know this obvious but just to make it a quick checklist
Web frameworks (such as Django)
Understanding of multi-process architecture
Understanding of how to use RESTful APIs
Should know how to build Python application
Nice to have Skills
Understanding of Systems administration and Scriptwriting
Other programming languages like Java or C++
Also understand the candidate’s communication skills, problem-solving and decision-making ability while assessing him for above skills.
Start with evaluating candidates with Python Online Tests
Before bringing in the candidates for the interview, make sure to assess the candidates with online python coding test. These skill tests will help you to determine the top one percent of python developers among the ones you were successful in attracting.
As an employer, you can easily evaluate candidate’s knowledge on various concepts, frameworks, and coding with this advanced python coding test for experienced.
These Simulation-based Python online tests prove to be the most reliable way of testing candidate’s python programming skills. Evaluate the knowledge of candidates and coding style with the assessments that are created by a team of Subject Matter Experts. These tests give balanced emphasis to both theory and coding questions.
Python Interview Questions
When structuring your interview, spend time figuring out which questions you want to ask. Below is the list of some balanced coding and practical sample python interview questions for experienced. Read them, bookmark them, comment on them, or even contribute your own.
1. What will be the output of the code below in Python 2? Explain your answer.
print “%s/%s = %s” % (x, y, x/y)
print “%s//%s = %s” % (x, y, x//y)
Also, how would the answer differ in Python 3 (assuming, of course, that the above [print] statements were converted to Python 3 syntax)?
2. What are the key differences between Python 2 and 3?
3. What are some alternative implementations to CPython? When and why might you use them?
4. How does Python’s garbage collection work?
5. What is the difference between range and xrange? How has this changed over time?
6. Here’s a function (Provide a function). Optimize it for me.
7. What will be the output of the code below?
List = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’]
print list [10:]
8. How does the GIL impact concurrency in Python? What kinds of applications does it impact more than others?
9. How do you iterate over a list and pull element indices at the same time?
10. How do you enforce ordering for a dictionary-style object?
11. How many ways can you append or concatenate strings? Which of these ways is fastest? Easiest to read?
12. What is PYTHONSTARTUP and how is it used?
13. Write a code for downloading a CSV in Python2 and Python3. (Provide a link to CSV file)
14. I’m getting a maximum recursion depth error for a function. What does this mean? How can I mitigate the problem?
15. Here’s a class hierarchy with some methods defined. When I call this function, what gets printed?
Apart from these technical questions, ask these following general questions to find out more about candidates Python skills
16. What’s your favorite standard library module?
17. Tell me something you don’t like about Python.
18. What was the most interesting project you have participated in? Can you describe it and tell why you consider it to be so interesting?
19. Do you like to participate in the analysis, design and deployment phases of a project or do you prefer to concentrate on the pure development of well-described task? Why?
20. I have noticed you listed Skill X on your CV. What’s your opinion about it?
21. Do you remember any programming project decision you made that was a failure? Why do you think it was a mistake? Why did it happen? What did you learn from this experience?
Along with these look whether the candidate stays up to date with the latest developments? Ask him the question related to trending technologies and updations. See if the candidate is active on Github? Ask him which blogs do he follows, whom does he follow on Twitter? Do they contribute to any open source software projects? Do they help people on Question answer forums? In short, how strong is their interest in their python?
Try giving a task or project to the candidate with a real issue that you had encountered previously on your Python-focused software architecture problems.
When interviewing candidates ask broad questions, remember it’s not always the correct answer the candidate gives, but the thought process and problem-solving skills he applies.
Just a two step process
It is just a two step process after you source candidates.
First – Assess candidates with the python online coding test and then
Second – Interview only those relevant candidates who passed the test.
With python coding skills assessment you will be 70 percent sure that the candidate is a good and competent python developer. Now just to be 100 percent sure you need to conduct the last step, interview.
Got a question?
We would love to hear more questions from you that you think are essential for evaluating Python developers. And, if you got a question, we’re all ears!