HCL Infosystems Python Developer Lead Interview Questions and Answers

Q1. Write a code for reverse an integer?
Ans. 
Use string manipulation to reverse an integer in Python.
• Convert the integer to a string

• Use string slicing to reverse the string

• Convert the reversed string back to an integer
Answered by AI
Add your answer

Q1. Differences between docker image and container
Ans. 
Docker image is a template used to create containers, while a container is a running instance of an image.
• Docker image is read-only, while a container is a writable instance of an image.

• Multiple containers can be created from the same image, but each container is isolated from others.

• Containers can be started, stopped, moved, and deleted, while images are static and cannot be changed.

• Images are used to package an appli...read more
Answered by AI
Add your answer

String,lists,dict and coding knowledge

Same sample coding exam

Q1. Ask technical questions
Add your answer
Q2. Python, django and SQL questions
Add your answer
Q3. List, tuple, orm, queries questions
Add your answer
Q4. Company working environmentquestions
Add your answer

Q1. Self introduction questions
Add your answer

Q1. Iam intersed intersed
Add your answer
Q2. Python language question i will answerd
Add your answer

Q1. What is generator? write sample code
Ans. 
A generator in Python is a function that returns an iterator object which can be iterated over to generate values lazily.
• Generators are created using a function with 'yield' keyword instead of 'return'.

• They allow for efficient memory usage as they generate values on the fly.

• Generators are useful for generating large sequences of data without storing them in memory.

• Example: def my_generator(): for i in range(5): yiel...read more
Answered by AI
Add your answer
Q2. What is decorator?
Ans. 
Decorator is a design pattern in Python that allows adding new functionality to an existing object without modifying its structure.
• Decorators are functions that take another function as an argument and extend its behavior without modifying it directly.

• They are commonly used to add logging, timing, caching, or authentication to functions.

• Decorators use the @ symbol followed by the decorator name above the function defin...read more
Answered by AI
Add your answer
Q3. Difference between list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List can be modified after creation, tuple cannot.

• List uses square brackets [], tuple uses parentheses ().

• List is used for dynamic data, tuple for fixed data.

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)
Answered by AI
Add your answer
Q4. What is list comprehension? write some sample code? what is use of it?
Ans. 
List comprehension is a concise way to create lists in Python by iterating over an existing list or iterable.
• List comprehension is more concise and readable than traditional loops.

• It can be used to filter elements, perform operations on elements, or create new lists based on existing ones.

• Example: squares = [x**2 for x in range(10)]

• Example: even_numbers = [x for x in range(10) if x % 2 == 0]
Answered by AI
Add your answer
Q5. Write code of fibonacci series?
Ans. 
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Initialize variables for the first two numbers in the series (0 and 1)

• Use a loop to calculate the next number by adding the previous two numbers

• Continue the loop until the desired number of terms is reached
Answered by AI
Add your answer
Q6. What is dictionary? is this accept duplicate or not?
Ans. 
A dictionary in Python is a collection of key-value pairs. It does not accept duplicate keys.
• A dictionary is created using curly braces {}

• Keys in a dictionary must be unique, but values can be duplicated

• Example: my_dict = {'name': 'John', 'age': 30, 'city': 'New York'}
Answered by AI
Add your answer
Q7. Multiple decorator
Add your answer
Q8. What are the main principles of oops?
Ans. 
Main principles of OOP include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class). Example: Class with private attributes and public methods.

• Inheritance: Ability to create a new class (derived class) from an existing class (base class), inheriting its attributes and methods. Example: Subclass 'Dog' inheriting from superc...read more
Answered by AI
Add your answer
Q9. Explain type of inheritance
Ans. 
Type of inheritance in object-oriented programming determines how a subclass can inherit attributes and methods from a superclass.
• Single inheritance: a subclass inherits from only one superclass.

• Multiple inheritance: a subclass inherits from multiple superclasses.

• Multilevel inheritance: a subclass inherits from a superclass, which in turn inherits from another superclass.

• Hierarchical inheritance: multiple subclasses in...read more
Answered by AI
Add your answer
Q10. What is aws lambda function
Ans. 
AWS Lambda is a serverless computing service provided by Amazon Web Services.
• Serverless computing service

• Allows running code without provisioning or managing servers

• Automatically scales based on incoming traffic

• Supports multiple programming languages like Python, Node.js, Java, etc.

• Pay only for the compute time consumed
Answered by AI
Add your answer

Q1. Tell me about yourself
Ans. 
I am a seasoned Python developer with experience leading teams and delivering high-quality software solutions.
• Over 5 years of experience in Python development

• Strong leadership skills in guiding and mentoring team members

• Proven track record of delivering successful software projects on time and within budget
Answered by AI
Add your answer
Q2. Explain your project briefly
Ans. 
Developed a web application for online shopping with user authentication and payment gateway integration.
• Created user registration and login functionality using Django framework

• Integrated Stripe API for secure payment processing

• Implemented product catalog and shopping cart features
Answered by AI
Add your answer

Q1. Salary discussion
Add your answer

Def factorial_iterative(n):
result = 1
for i in range(1, n + 1):
result *= i
return result

It was general aptitude test .

Easy to medium level coding questions

Q1. Oops related questions
Add your answer
Q2. Indepth dive into concepts of c++
Add your answer

Q1. Where do you see yourself in 5 years
Ans. 
In 5 years, I see myself as a senior Python and Django developer leading a team of developers on innovative projects.
• Continuing to enhance my skills in Python and Django development

• Taking on more leadership roles within the development team

• Contributing to the success of the company through my technical expertise

• Possibly pursuing certifications or advanced degrees to further my knowledge
Answered by AI
Add your answer
Q2. Why do you want to join the company
Ans. 
I am excited about the company's innovative projects and collaborative work environment.
• I am impressed by the company's reputation in the industry.

• I believe my skills and experience align well with the company's goals.

• I am eager to work with a talented team and contribute to the company's success.
Answered by AI
Add your answer

Q1. What is your family background?
Add your answer
Q2. What are your strengths and weaknesses?
Add your answer
Q3. What are your salary expectations?
Add your answer
Q4. Tell me about yourself.
Add your answer