Tech Mahindra Python Software Developer Interview Questions, Process, and Tips

String,lists,dict and coding knowledge

Q1. Create new list from the provided list but the order should be shuffled and no duplicate element should be removed
Ans. 
Create a new list with shuffled order and no duplicate elements.
• Use the random.shuffle() function to shuffle the list

• Use a set to keep track of elements already added to the new list to avoid duplicates

• Convert the set back to a list to maintain the order of elements
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Q2. Architecture of existing application
Ans. 
The existing application follows a microservices architecture with separate components for different functionalities.
• The application is divided into multiple services that communicate with each other through APIs.

• Each service is responsible for a specific task or functionality, promoting modularity and scalability.

• Examples of microservices in the architecture include user authentication service, payment processing serv
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Q1. Why do you want to join
Ans. 
I am passionate about Python development and excited about the innovative projects your company is working on.
• Passionate about Python development

• Excited about innovative projects at company

• Seeking growth and learning opportunities
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Q2. Where do you see yourself in 5 years
Ans. 
In 5 years, I see myself as a senior Python developer leading a team of developers on innovative projects.
• Continuing to enhance my Python skills and staying updated on new technologies

• Taking on more leadership responsibilities and mentoring junior developers

• Contributing to the success of the company through my technical expertise
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Q1. : Tell me about yourself
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Q2. What is the difference between hard work and smart work? Tell me about the most boring job you have ever had?
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30mins on diff python and flask

Q1. Data structures
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Q2. Object orientation
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Q1. What is a one-line function?
Ans. 
A one-line function is a function written in a single line of code, typically used for simple operations.
• One-line functions are concise and easy to read, often used for simple tasks like mathematical operations or string manipulation.

• They are commonly used in lambda functions in Python.

• Example: lambda x: x**2
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Q2. What is polymorphism in OOps?
Ans. 
Polymorphism in OOPs refers to the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent different data types.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: In Python, the '+' operator can be us...read more
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Q3. Remove duplicates from the table.
Ans. 
Use SQL query with DISTINCT keyword to remove duplicates from the table.
• Use SELECT DISTINCT column_name FROM table_name to retrieve unique values from a specific column.

• Use DELETE FROM table_name WHERE column_name IN (SELECT column_name FROM table_name GROUP BY column_name HAVING COUNT(*) > 1) to remove duplicates from the table.
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Q4. Join two tables?
Ans. 
Use SQL JOIN to combine rows from two tables based on a related column between them.
• Use JOIN keyword in SQL to combine rows from two tables based on a related column

• Types of JOINs include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 JOIN table2 ON table1.column = table2.column
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