Frequently Asking Interview Question and Answers

Well, interview is the time when we are the most anxious.
We want to answer all the questions in a prepared manner. We understand your anxiety and are here to give you a list of the questions that the interviewer may ask. Get assistance from this comprehensive list and crack your interviews like an expert.

Get Python Training from Experts. Call us @ +91 86087 00340 for a free demo session!

Python Interview Question and Answers

  1. What is the difference between list and tuple?
  2. What are the key features of python?
  3. Why python is referred as glue code?
  4. How memory is managed in python?
  5. Explain whats flask?
  6. What is monkey Patching in python?
  7. What is PEP 8?
  8. What is pickling and unpickling?
  9. What are the tools that help to find bugs or perform analysis?
  10. What are python decorators?
  11. What are built in types in python?
  12. What is docstring in python?
  13. What is module and package in python?
  14. Is there a switch or case statements in python?if not what is the reason for the same?
  15. What is a function in python programming?
  16. Which package is the fastest form of python?
  17. What is GiL in python programming language?
  18. What is composition in python?
  19. What are closures in python?
  20. How do you check the presence of the key in python dictionary?

1. What is the difference between list and tuple?

Both the list and tuple is the combination of numbers and strings

Syntax:

List=[45,’abc’,453.345]

Tuple=(43,’dsfsd’,546.345]

List are mutable in nature where as tuples are immutable in nature.

2. What are the key features of python?

Interpreted programming language-no compilation like c,c++

Dynamically typed-no need to state the type of the variable

Functions are first class objects, classes also first class objects.

Writing python code is quick.

3. Why python is referred as glue code?

It helps in integrating multiple programming languages.

It is used in multiple spheres as web application,automation,scientific modelling,big data

4. How memory is managed in python?

It is managed by python’s private heap space.

Allocation of heap space is done by pythons memory manager.

5. Explain whats flask?

It is pythons micro webframework based on “Werkzeug ,jinja2, and good intentions”.

Benefits of flask:

User can modify the data stored by cookies session,if only it has the secret Flask key.

6. What is monkey Patching in python?

Dynamic modification of python class or modules during runtime.

It is kind of testing module in python

7. What is PEP 8?

It is a coding convention, a set of recommendation ,about how to write python code more readable

8. What is pickling and unpickling?

Pickle module accepts any python object and converts it into a string representation and dumps it into a file by using ,this process is called pickling.

While the process of retrieving original python objects from the stored string representation is called unpickling.

9. What are the tools that help to find bugs or perform analysis?

Pychecker is a static analysis tool that detects the bugs in python source code and warns about the style and complexity of the bug.

Pylint is another tool that verifies whether the module meets the coding standard.

10. What are python decorators?

It is a specific change that we make in python syntax to alter their functions easily.

11. What are built in types in python?

Mutable datatypes:

Lists

Sets

Dictionary

Immutable datatypes:

Strings

Tuples

Numbers

12. What is docstring in python?

A python documentation string is known as docstring ,it is a way of documenting python functions,modules and classes.

13. What is module and package in python?

Module is the way to structure the program.each python program file is a module which imports other modules.

A python folder which contains multiple python files is called Packages.

14. Is there a switch or case statements in python?if not what is the reason for the same?

Python does not switch statement but we can write switch function and use it.

15. What is a function in python programming?

A function is an object which represents a block of code and is a reusable entity.it brings modularity to a program and a higher degree of code reusability.

16. Which package is the fastest form of python?

PyPy provides the maximum compatitbility which utilizing CPython implementation for improving its performance.

The tests confimed that PyPy is nearly five times faster than the Cpython.

17. What is GiL in python programming language?

Python supports GIL (Global interpreter Lock)which is mutex used to secure access to python objects ,synchronizing multiple threads from running the python bytecodes at the same time.

18. What is composition in python?

It is a particular type of inheritance in python.

It means to inherit from the base class but from the relationship with the use of instance variables which are references to different objects.

19. What are closures in python?

Python closures are function objects returned by another function.

We use them to eliminate code redundacy.

20. How do you check the presence of the key in python dictionary?

We can use “In” operator to test the presence of a key inside dict object.

Hope you find this set of Python interview questions useful. Go through them and boost your confidence in interviews! We have purposefully touched most of the aspects of Python in this section. Continue learning. Learning is enriching!