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20+ Python Fullstack Developer Interview Questions and Answers

Updated 1 Feb 2025

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Q1. what are the key differences between ArrayList and LinkdList in python?

Ans.

ArrayList is a resizable array implementation, while LinkedList is a doubly linked list implementation in Python.

  • ArrayList uses contiguous memory allocation, while LinkedList uses non-contiguous memory allocation.

  • ArrayList provides fast access to elements using index, while LinkedList provides fast insertion and deletion of elements.

  • ArrayList is better for storing and accessing data sequentially, while LinkedList is better for frequent insertion and deletion operations.

  • Exampl...read more

Q2. how would you delete and remove duplicates from an array

Ans.

To delete and remove duplicates from an array of strings, use a set to store unique values.

  • Convert the array to a set to automatically remove duplicates

  • Convert the set back to a list to maintain the original order

  • Example: array = ['apple', 'banana', 'apple', 'orange']

  • Set(array) will result in {'apple', 'banana', 'orange'}

  • List(set(array)) will give ['apple', 'banana', 'orange']

Python Fullstack Developer Interview Questions and Answers for Freshers

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Q3. given a list of numbers, find the first missing positive integer

Ans.

Find the first missing positive integer in a list of numbers

  • Sort the list and iterate through it to find the first positive integer

  • Use a set to keep track of positive integers already seen

  • Return the first positive integer not in the set

Q4. write a function to determine if given string id palindrome

Ans.

Function to determine if a given string is a palindrome

  • Create a function that takes a string as input

  • Remove all non-alphanumeric characters and convert to lowercase

  • Compare the string with its reverse to check if it is a palindrome

  • Return True if it is a palindrome, False otherwise

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Q5. you can explain the HHTP request response cycle

Ans.

HTTP request response cycle involves a client sending a request to a server, which processes the request and sends back a response.

  • Client sends a request to a server using a specific HTTP method (GET, POST, PUT, DELETE, etc.)

  • Server processes the request, performs necessary actions, and generates a response

  • Server sends the response back to the client, typically including a status code (200 for success, 404 for not found, etc.) and the requested data

  • Client receives the response...read more

Q6. What is python , features of python,what is function

Ans.

Python is a high-level programming language known for its simplicity and readability. Functions are blocks of code that perform a specific task.

  • Python is a high-level, interpreted, and general-purpose programming language.

  • Features of Python include easy syntax, dynamic typing, automatic memory management, and extensive standard libraries.

  • Functions in Python are blocks of code that perform a specific task and can be reused throughout the program.

  • Example: def greet(name): print...read more

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Q7. How to read a file using inbuilt function in python?

Ans.

Use the open() function to read a file in Python.

  • Use the open() function with 'r' mode to open a file for reading.

  • Use the read() method to read the contents of the file.

  • Close the file using the close() method after reading.

Q8. What is API why we are using in development

Ans.

API stands for Application Programming Interface. It is used in development to allow different software applications to communicate with each other.

  • APIs define the methods and data formats that applications can use to request and exchange information.

  • They allow developers to access the functionality of a service or application without needing to understand its internal workings.

  • APIs are commonly used to integrate different systems, automate tasks, and extend the functionality...read more

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Q9. What are strengths and weekness?

Ans.

Strengths: Strong problem-solving skills, attention to detail, and ability to work well in a team. Weaknesses: Lack of experience with certain frameworks and technologies.

  • Strength: Strong problem-solving skills

  • Strength: Attention to detail

  • Strength: Ability to work well in a team

  • Weakness: Lack of experience with certain frameworks and technologies

Q10. What are the advantages and disadvantage

Ans.

Advantages and disadvantages of Python Fullstack Developer role

  • Advantages: versatile skill set, high demand in the job market, ability to work on both front-end and back-end development

  • Disadvantages: potential for burnout due to working on multiple aspects of a project, need to stay updated with constantly evolving technologies

Q11. What are python list and tuple

Ans.

Python list and tuple are both data structures used to store multiple items in a single variable, but list is mutable while tuple is immutable.

  • List is defined using square brackets [] and can be modified after creation.

  • Tuple is defined using parentheses () and cannot be modified after creation.

  • Example of list: my_list = [1, 'apple', True]

  • Example of tuple: my_tuple = (2, 'banana', False)

Q12. What Is access modifiers ?

Ans.

Access modifiers in Python are keywords used to restrict access to certain class members.

  • Access modifiers in Python include public, protected, and private keywords.

  • Public members can be accessed from outside the class, protected members can be accessed within the same module or subclass, and private members can only be accessed within the same class.

  • Public members do not have any special symbol, protected members have a single underscore (_) prefix, and private members have a...read more

Q13. Python - Difference between is and ==

Ans.

The 'is' operator checks if two variables point to the same object in memory, while '==' checks if the values of the two variables are equal.

  • Use 'is' to check if two variables reference the same object in memory

  • Use '==' to check if the values of two variables are equal

  • Example: a = [1, 2, 3]; b = a; a is b will return True, a == b will also return True

Q14. Mention python frameworks worked in

Ans.

Worked with Django, Flask, and FastAPI frameworks in Python.

  • Django - Full-featured web framework for building web applications.

  • Flask - Lightweight web framework for small to medium-sized projects.

  • FastAPI - Modern web framework for building APIs with high performance.

Q15. What is docker?

Ans.

Docker is a platform for developing, shipping, and running applications in containers.

  • Docker allows developers to package up an application with all of its dependencies into a standardized unit called a container.

  • Containers are lightweight, standalone, and can run on any machine that has Docker installed.

  • Docker simplifies the process of building, shipping, and running applications across different environments.

  • Example: Running a Python web application in a Docker container.

  • Ex...read more

Q16. What is kubernetes?

Ans.

Kubernetes is an open-source container orchestration platform for automating deployment, scaling, and managing containerized applications.

  • Kubernetes helps in automating the deployment, scaling, and management of containerized applications.

  • It allows for easy scaling of applications by adding or removing containers based on demand.

  • Kubernetes provides features like load balancing, self-healing, and rolling updates for applications.

  • It simplifies the management of containers by ab...read more

Q17. What is _init_() in python

Ans.

The __init__() method is a special method in Python classes used to initialize new objects.

  • The __init__() method is called when a new object is created from a class.

  • It is used to initialize the attributes of the object.

  • The __init__() method is similar to a constructor in other programming languages.

Q18. Difference between list and tuple

Ans.

List is mutable, tuple is immutable in Python.

  • List is defined using square brackets [], tuple using parentheses ().

  • Elements in list can be changed, added, or removed. Tuple elements cannot be changed once defined.

  • Lists are used for collections of items that may need to be modified. Tuples are used for fixed collections of items.

  • Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)

Frequently asked in, ,

Q19. Why interceptor are used

Ans.

Interceptors are used to intercept and manipulate HTTP requests and responses in web applications.

  • Interceptors can be used for logging, authentication, error handling, caching, and modifying request/response headers.

  • In Angular, interceptors are used to add authentication tokens to outgoing requests or handle errors globally.

  • In Spring Boot, interceptors can be used to log incoming requests, validate input, or modify response data.

Q20. What is core python

Ans.

Core Python refers to the basic and essential components of the Python programming language.

  • Core Python includes fundamental concepts like data types, control structures, functions, and modules.

  • It does not include any external libraries or frameworks like Django or NumPy.

  • Understanding core Python is essential for building a strong foundation in Python programming.

Q21. Authentication in RestApi

Ans.

Authentication in RestApi involves verifying the identity of users before granting access to resources.

  • Use tokens (JWT) for authentication

  • Implement OAuth for secure authentication

  • Utilize session management for user authentication

  • Implement two-factor authentication for added security

Q22. React - useEffect vs useState

Ans.

useEffect is used for side effects in functional components, while useState is used for managing state.

  • useEffect is used to perform side effects in functional components, like data fetching, subscriptions, or manually changing the DOM

  • useState is used to manage state in functional components, allowing the component to re-render when the state changes

  • Example: useEffect can be used to fetch data from an API when the component mounts, while useState can be used to store and updat...read more

Q23. Total full stack quaries

Ans.

Total full stack queries refer to the number of queries made to the full stack of technologies in a web application.

  • Full stack queries involve interacting with both the front-end and back-end of a web application.

  • Examples of full stack queries include fetching data from a database, updating user interface elements, and handling form submissions.

  • Understanding how to optimize full stack queries can improve the performance of a web application.

Q24. exception handelling in python

Ans.

Exception handling in Python is a way to handle errors that may occur during the execution of a program.

  • Use try-except blocks to catch and handle exceptions

  • Different types of exceptions can be caught and handled separately

  • Use finally block to execute code regardless of whether an exception occurred

  • Custom exceptions can be defined by creating a new class that inherits from the Exception class

Q25. Print error using python

Ans.

Use the print function in Python to display an error message.

  • Use the print function followed by the error message enclosed in quotes

  • You can also use the sys module to display more detailed error messages

  • Consider using try-except blocks to catch and print specific errors

Q26. Explain redux flow

Ans.

Redux flow is a predictable state container for JavaScript apps.

  • Actions are dispatched to the store

  • Reducers specify how the state changes in response to actions

  • State is updated immutably

  • Components subscribe to the store to get updated state

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