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NeoSOFT Python and Django Developer Interview Questions and Answers for Experienced
9 Interview questions
Method overloading allows multiple methods with the same name but different parameters; overriding replaces a method in a subclass.
Method Overloading: Same method name with different parameters in the same class.
Example: def add(self, a: int, b: int) and def add(self, a: float, b: float).
Method Overriding: Subclass provides a specific implementation of a method already defined in its superclass.
Example: class Anim...
Pandas is a powerful Python library for data manipulation and analysis, providing data structures like DataFrames and Series.
DataFrame: A 2-dimensional labeled data structure, similar to a spreadsheet. Example: df = pd.DataFrame({'A': [1, 2], 'B': [3, 4]})
Series: A one-dimensional labeled array capable of holding any data type. Example: s = pd.Series([1, 2, 3])
Data manipulation: Easily filter, group, and aggregate...
PEP 8 is the style guide for Python code, promoting readability and consistency in Python programming.
Encourages using 4 spaces per indentation level instead of tabs.
Recommends limiting lines to 79 characters for better readability.
Suggests using blank lines to separate functions and classes.
Promotes using descriptive variable names, e.g., 'user_age' instead of 'ua'.
Advises on proper import ordering: standard libr...
Multithreading allows concurrent execution of tasks in Python, enhancing performance and responsiveness in applications.
Concurrency: Multiple threads run simultaneously, improving application responsiveness.
Thread Creation: Use the 'threading' module to create threads. Example: 'threading.Thread(target=func).start()'.
Synchronization: Use locks (e.g., 'threading.Lock') to prevent race conditions when accessing shar...
DRF provides JSON, BrowsableAPI, TemplateHTML, and AdminRenderer classes for rendering responses.
JSONRenderer: Renders data in JSON format.
BrowsableAPIRenderer: Renders data in a browsable HTML format with forms for interacting with the API.
TemplateHTMLRenderer: Renders data using a specified template in HTML format.
AdminRenderer: Renders data in a format suitable for Django admin interface.
List is a built-in Python data structure that can hold elements of different data types, while Array is a data structure from the NumPy library that can hold elements of the same data type.
List is a dynamic array that can grow or shrink in size, while Array has a fixed size.
List can hold elements of different data types, while Array can only hold elements of the same data type.
List is a part of Python's standard l...
Method Resolution Order (MRO) is the order in which classes are searched for a method or attribute in Python.
MRO is determined by the C3 linearization algorithm in Python.
It follows a depth-first left-to-right traversal of the class hierarchy.
MRO is important in multiple inheritance scenarios to resolve method conflicts.
Example: class A: pass class B(A): pass class C(A): pass class D(...
Transactions in SQL are a way to ensure data integrity by grouping multiple SQL statements into a single unit of work.
Transactions help maintain the ACID properties (Atomicity, Consistency, Isolation, Durability) of a database.
They allow multiple SQL statements to be executed as a single unit, either all succeeding or all failing.
Transactions can be started with BEGIN TRANSACTION, COMMIT to save changes, or ROLLBA...
Pandas is a powerful data manipulation library in Python, providing data structures like Series and DataFrame for efficient data analysis.
Series: A one-dimensional labeled array capable of holding any data type, similar to a list or array. Example: pd.Series([1, 2, 3])
DataFrame: A two-dimensional labeled data structure with columns of potentially different types, akin to a spreadsheet or SQL table. Example: pd.Dat...
NeoSOFT Python and Django Developer Interview Experiences for Experienced
2 interviews found
Mohit Aswani
(5 Questions)
- Q1. Difference between List and Array
- Ans.
List is a built-in Python data structure that can hold elements of different data types, while Array is a data structure from the NumPy library that can hold elements of the same data type.
List is a dynamic array that can grow or shrink in size, while Array has a fixed size.
List can hold elements of different data types, while Array can only hold elements of the same data type.
List is a part of Python's standard librar...
- Q2. Types of renderer classes in DRF
- Ans.
DRF provides JSON, BrowsableAPI, TemplateHTML, and AdminRenderer classes for rendering responses.
JSONRenderer: Renders data in JSON format.
BrowsableAPIRenderer: Renders data in a browsable HTML format with forms for interacting with the API.
TemplateHTMLRenderer: Renders data using a specified template in HTML format.
AdminRenderer: Renders data in a format suitable for Django admin interface.
- Q3. What is Method Resolution Order?
- Ans.
Method Resolution Order (MRO) is the order in which classes are searched for a method or attribute in Python.
MRO is determined by the C3 linearization algorithm in Python.
It follows a depth-first left-to-right traversal of the class hierarchy.
MRO is important in multiple inheritance scenarios to resolve method conflicts.
Example: class A: pass class B(A): pass class C(A): pass class D(B, C)...
- Q4. Difference between class method and static method.
- Ans.
Class method is bound to the class itself, while static method is not bound to any specific instance or class.
Class method takes 'cls' as the first parameter, allowing access to class variables and methods.
Static method does not take any special parameters and does not have access to class or instance variables.
Class method can be called on both the class and instances of the class.
Static method is mainly used for util...
- Q5. What are transactions in SQL?
- Ans.
Transactions in SQL are a way to ensure data integrity by grouping multiple SQL statements into a single unit of work.
Transactions help maintain the ACID properties (Atomicity, Consistency, Isolation, Durability) of a database.
They allow multiple SQL statements to be executed as a single unit, either all succeeding or all failing.
Transactions can be started with BEGIN TRANSACTION, COMMIT to save changes, or ROLLBACK to...
Interview Preparation Tips
Skills evaluated in this interview
Selected
- Q1. What is PEP 8?
- Ans.
PEP 8 is the style guide for Python code, promoting readability and consistency in Python programming.
Encourages using 4 spaces per indentation level instead of tabs.
Recommends limiting lines to 79 characters for better readability.
Suggests using blank lines to separate functions and classes.
Promotes using descriptive variable names, e.g., 'user_age' instead of 'ua'.
Advises on proper import ordering: standard libraries...
- Q2. What are the key concepts and features of multithreading?
- Ans.
Multithreading allows concurrent execution of tasks in Python, enhancing performance and responsiveness in applications.
Concurrency: Multiple threads run simultaneously, improving application responsiveness.
Thread Creation: Use the 'threading' module to create threads. Example: 'threading.Thread(target=func).start()'.
Synchronization: Use locks (e.g., 'threading.Lock') to prevent race conditions when accessing shared re...
- Q3. What are examples of method overloading and method overriding in Object-Oriented Programming (OOP)?
- Ans.
Method overloading allows multiple methods with the same name but different parameters; overriding replaces a method in a subclass.
Method Overloading: Same method name with different parameters in the same class.
Example: def add(self, a: int, b: int) and def add(self, a: float, b: float).
Method Overriding: Subclass provides a specific implementation of a method already defined in its superclass.
Example: class Animal ha...
- Q4. Difference between list and array
- Ans.
Lists are flexible and can hold mixed data types; arrays are fixed-type and more efficient for numerical data.
Lists can contain elements of different data types: ['apple', 42, 3.14, True]
Arrays are typically used for numerical data and require all elements to be of the same type: array('i', [1, 2, 3])
Lists are part of Python's built-in data types, while arrays require importing the 'array' module or using libraries lik...
- Q5. What is pandas
- Ans.
Pandas is a powerful Python library for data manipulation and analysis, providing data structures like DataFrames and Series.
DataFrame: A 2-dimensional labeled data structure, similar to a spreadsheet. Example: df = pd.DataFrame({'A': [1, 2], 'B': [3, 4]})
Series: A one-dimensional labeled array capable of holding any data type. Example: s = pd.Series([1, 2, 3])
Data manipulation: Easily filter, group, and aggregate data...
- Q6. Types of pandas and what the role of backend developer
- Ans.
Pandas is a powerful data manipulation library in Python, providing data structures like Series and DataFrame for efficient data analysis.
Series: A one-dimensional labeled array capable of holding any data type, similar to a list or array. Example: pd.Series([1, 2, 3])
DataFrame: A two-dimensional labeled data structure with columns of potentially different types, akin to a spreadsheet or SQL table. Example: pd.DataFram...
Interview Preparation Tips
Top trending discussions
Interview questions from similar companies
Software Developer Interview Questions & Answers
Bounteous x Accolite
Anonymous
posted on 11 Mar 2022
I appeared for an interview before Mar 2021.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
21 students were shortlisted from the 1st MCQ round and in this round we were asked to write the codes (function only) of 3 questions in 1 hour time.
- Q1.
Rotting Oranges Problem Statement
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
- 0 - representing an empty cell
- 1 - representing a fre...
- Ans.
Find the minimum time required to rot all fresh oranges in a grid.
Use Breadth First Search (BFS) to simulate the rotting process
Track the time taken to rot all oranges and return -1 if any fresh oranges remain
Handle edge cases like no fresh oranges or all oranges already rotten
Consider using a queue to efficiently process adjacent oranges
- Q2.
Majority Element Problem Statement
Given an array/list 'ARR' consisting of 'N' integers, your task is to find the majority element in the array. If there is no majority element present, return -1.
Exampl...
- Ans.
Find the majority element in an array, return -1 if no majority element exists.
Iterate through the array and keep track of the count of each element using a hashmap.
Check if any element's count is greater than floor(N/2) to determine the majority element.
Return the majority element or -1 if no majority element exists.
- Q3.
Maximum Path Sum Between Two Leaves Problem Description
You are provided with a non-empty binary tree in which each node contains a non-negative integer value. Your task is to find and return the maximum ...
- Ans.
Find the maximum path sum between two leaf nodes in a binary tree.
Traverse the tree to find the maximum path sum between two leaf nodes.
Keep track of the maximum sum found so far.
Consider all possible paths between leaf nodes.
Handle cases where the tree has only a single leaf node.
Implement a recursive function to calculate the maximum path sum.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
This was a technical round with DSA based questions.
- Q1.
N-th Node From The End Problem Statement
You are given a Singly Linked List of integers. The task is to find the N-th node from the end of the list.
Example:
Input:
If the given list is (1 -> -2 -&g...
- Ans.
Find the N-th node from the end of a Singly Linked List of integers.
Traverse the list to find the length L of the list.
Calculate the position of the N-th node from the beginning as L - N + 1.
Traverse the list again to reach the calculated position and return the node's value.
- Q2.
LCA of Binary Tree Problem Statement
You are given a binary tree consisting of distinct integers and two nodes,
XandY. Your task is to find and return the Lowest Common Ancestor (LCA) of these two nodes... - Ans.
Find the Lowest Common Ancestor (LCA) of two nodes in a binary tree.
Traverse the binary tree to find the paths from the root to nodes X and Y.
Compare the paths to find the last common node, which is the LCA.
Handle cases where one node is an ancestor of the other or when one node is the LCA itself.
- Q3.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading/trailing spaces and multiple spaces between words.
Split the input string by spaces to get individual words
Reverse the list of words
Join the reversed words with a single space in between
Handle leading/trailing spaces by stripping them before and after reversing
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round with questions based on DSA
- Q1.
Minimum Time To Solve The Problems
Given 'N' subjects, each containing a certain number of problems, and 'K' friends, assign subjects to friends such that each subject goes to exactly one friend, maintain...
- Ans.
Assign subjects to friends to minimize maximum workload, find minimum time for most loaded friend.
Sort subjects in descending order
Assign subjects to friends one by one until all subjects are assigned
The maximum workload will be the sum of problems assigned to the friend with the most problems
Return the maximum workload as the minimum time required
- Q2. What is grammar in the context of compiler design?
- Ans.
Grammar in compiler design defines the syntax and structure of a programming language.
Grammar specifies the rules for forming valid statements in a programming language.
It consists of a set of production rules that define how valid programs can be constructed.
There are different types of grammars such as context-free grammar, regular grammar, etc.
Example: In C programming language, the grammar specifies that a for loop...
- Q3. What is a token in compiler design?
- Ans.
A token in compiler design is a basic unit of syntax that the compiler can understand and process.
Tokens are the smallest units of a program that are meaningful to the compiler.
Examples of tokens include keywords, identifiers, operators, and punctuation symbols.
Tokens are generated by the lexical analysis phase of the compiler.
Tokens are used by the parser to build the abstract syntax tree of the program.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical round with questions on DSA and Compiler Design mainly. He told me that you’ll be having your final HR round in some time. I knew that I was going well because he seemed to be quite satisfied with my answers.
- Q1.
Sum Root to Leaf Numbers
You are given an arbitrary binary tree consisting of N nodes, each associated with an integer value from 1 to 9. Each root-to-leaf path can be considered a number formed by concat...
- Ans.
Find the total sum of all root to leaf paths in a binary tree formed by concatenating node values.
Traverse the binary tree from root to leaf nodes, keeping track of the current path sum
Add the current path sum to the total sum when reaching a leaf node
Use modulo (10^9 + 7) to handle large outputs
- Q2. What is a regular language?
- Ans.
A regular language is a language that can be recognized by a finite automaton.
Regular languages can be described by regular expressions.
Regular languages are closed under union, concatenation, and Kleene star operations.
Examples of regular languages include the set of all strings over an alphabet that contain an even number of 'a's.
- Q3. What are NP and NP-Hard problems?
- Ans.
NP problems are decision problems that can be verified in polynomial time, while NP-Hard problems are at least as hard as the hardest problems in NP.
NP problems can be verified in polynomial time but not necessarily solved in polynomial time.
NP-Hard problems are at least as hard as the hardest problems in NP, but may not be in NP themselves.
Examples of NP problems include the subset sum problem and the traveling salesm...
Round duration - 30 minutes
Round difficulty - Easy
That was the round for which I’ve been waiting for hours
She was very friendly and nice to talk to. It didn’t seem that I was talking to the HR. It was more like talking to a friend. Finally we discussed about the pay-scale and work culture in Accolite.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Bounteous x Accolite
Anonymous
posted on 24 Jan 2022
I applied via Campus Placement and was interviewed before Jan 2021. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. 1. Write a code to split an array of integers into two subarray where both the array has equal sum.
- Ans.
Code to split an array of integers into two subarrays with equal sum.
Iterate through the array and calculate the total sum.
Divide the sum by 2 to get the target sum for each subarray.
Use dynamic programming to find a subset of the array that adds up to the target sum.
Return the two subarrays.
Example: [1, 2, 3, 4, 5, 6] -> [1, 2, 3, 6], [4, 5]
Example: [1, 2, 3, 4, 5] -> [1, 4, 5], [2, 3]
- Q2. To write code to build up a binary tree from scratch (implement a BST) and then to write all the methods like all the tree traversal algo, and all other stuffs.
- Ans.
Implementing a binary search tree and its traversal methods.
Start by defining a Node class with left and right child pointers.
Implement insert() method to add nodes to the tree.
Implement inorder(), preorder(), and postorder() traversal methods.
Implement search() method to find a node in the tree.
Implement delete() method to remove a node from the tree.
Consider edge cases like empty tree, duplicate nodes, etc.
- Q3. Other OOPs concept and questions related to DSA and OS.
Interview Preparation Tips
Skills evaluated in this interview
Interview Questionnaire
1 Question
- Q1. Java multithreading, oops
Software Developer Interview Questions & Answers
Quantiphi Analytics Solutions Private Limited
Anonymous
posted on 29 Nov 2021
I appeared for an interview before Nov 2020.
(1 Question)
Round duration - 90 Minutes
Round difficulty - Medium
- Q1.
Fruits and Baskets Problem Statement
You are given 'n' fruit trees planted along a road, numbered from 0 to n-1. Each tree bears a fruit type represented by an uppercase English alphabet. A Ninja walking ...
- Ans.
The problem is to find the maximum number of fruits the Ninja can put in both baskets after satisfying given conditions.
The Ninja can start at any tree and end at any tree, but cannot skip a tree.
He can pick one fruit from each tree until he cannot, i.e., when he has to pick a fruit of the third type.
The restriction is that each basket can have only one type of fruit.
We need to find the maximum number of fruits that ca...
(1 Question)
Round duration - 30 Minutes
Round difficulty - Medium
Was Shortlisted For this round with in total of 22 students, 7 in my profile.
It was Technical round with 30 mins of time allotted.
The interviewer was friendly, started with basic questions about me followed by project specific and then a puzzle.
- Q1.
Sort 0 1 2 Problem Statement
Given an integer array
arrof size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.Input:
The first line contains an integer 'T' representing the n... - Ans.
The problem requires sorting an array of 0s, 1s, and 2s in a single scan.
Use three pointers to keep track of the positions of 0s, 1s, and 2s.
Initialize the low pointer at the beginning of the array and the high pointer at the end.
Iterate through the array using a current pointer and swap elements based on their values.
Move the pointers accordingly until the array is sorted.
The time complexity of this solution is O(N) a...
Round duration - 20 Minutes
Round difficulty - Hard
The interview was scheduled for 15 mins and 12 students were shortlisted for this round. 5 in my profile.
The interviewer didn't on his video whereas mine was, the interviewer was friendly and maintained a poker voice.
Asked Basic HR questions but crossed questioned several times.
Interview Preparation Tips
Tip 1 :Practice at least 3-4 coding questions daily. Start from basics of Pointers and Array and progress to Algo and Data structure specific like DP and Graphs. Try to time your sessions into 15-20 mins.
Tip 2 : Have Patience don't rush into problem solving, understand the Algo/Data structure first and then look for common problems for a particular Algo/Data structure.
Tip 3 : Have Basic Knowledge about all CS subjects, no need for in depth. Just cover Top 100 interview questions for each subject and topics covered in GFG and CodeStudio.
Tip 1 : Have at least 3-4 Projects in your resume but on diverse bases, like 1 ML based, 1-2 DBMS 1 with Computer vision/ Frontend. Don't obsess over internships so much.
Tip 2 : Be well verse with projects you put in resume, and specify your particular job role if a team project.
Tip 3 : Mention some extra curricular activities or Interests and hobbies (Non Tech) , if you sync with interviewer then it could be beneficial.
Skills evaluated in this interview
Selected
I applied via Campus Placement and was interviewed before Mar 2023. There were 3 interview rounds.
Around 75 mcq questions with snippets of code
(3 Questions)
- Q1. Interview conducted by technical lead. Around 10-15 questions asked. Questions related to your skills only.
- Q2. Basics of core java
- Q3. SQL queries, scenario based questions
(1 Question)
- Q1. Daily routine. Casual question/non technical questions. Tricky question. Puzzles. Sone technical questions.
Interview Preparation Tips
Work culture is very awesome.
All the facilities are there as
1. Technical Trainings
2. Games and funny events
3. Canteen
4. Auditorium
5. Sick room
6. People are helping.
Selected
I applied via Campus Placement and was interviewed in Jul 2023. There were 5 interview rounds.
Easy to crack. Just basics needed.
There were easy to medium questions.
(1 Question)
- Q1. Questions on dsa, programming languages
(1 Question)
- Q1. Basic hr questions like introduction bla bla nla
Question on aptitude was from -speed & Distance, Train problem, Blood relationship, Number system etc.
(1 Question)
- Q1. Question related to skill you added on your resume
Abi P
Topic about what happens when actress enter into politics
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Overall Interview Experience Rating
based on 2 interview experiences
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