TCS Python Software Developer Interview Questions, Process, and Tips

Programming test in basic

Code implementation in live

Project questions asked

Q1. Self intro and questions about project
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Round 1- 20 Ques (Foundation)
Round 2- 15 Ques (Advanced-contains both Quants and Logical

3-4 questions are asked

Q1. What are interrupts?
Ans. 
Interrupts are signals sent to the CPU to temporarily suspend the current program and handle a specific event or request.
• Interrupts allow the CPU to respond to events in real-time without wasting processing power.

• They can be generated by hardware devices, software programs, or the CPU itself.

• Examples include keyboard input, timer expiration, and hardware errors.
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Q2. What do you mean by SQL Correlated Subqueries?
Ans. 
SQL correlated subqueries are subqueries that reference columns from the outer query.
• Correlated subqueries are executed for each row processed by the outer query.

• They are used to filter results based on values from the outer query.

• Example: SELECT * FROM table1 WHERE column1 = (SELECT MAX(column2) FROM table2 WHERE table2.id = table1.id)
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Q1. Generator in Python
Ans. 
Generators in Python are functions that allow you to iterate over a sequence of items without storing them all in memory.
• Generators use the 'yield' keyword to return values one at a time

• They are memory efficient as they generate values on the fly

• Can be used in for loops, list comprehensions, and other iterable contexts
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Q1. PYTHON CODE DICIMAL CODE
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Q2. NUMPY ARRAY CODE PYTHON
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Q3. PYTHON LIST CODE APPEND LIST
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Q4. PYTHON FUCTIONS
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Q1. Basic python questions and data structures in python
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Q1. Difference between list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List uses square brackets [], tuple uses parentheses ().

• Elements in list can be changed, tuple elements are fixed.

• List is slower than tuple due to mutability.

• List is used for dynamic data, tuple for static data.
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Q2. Swap two numbers without swap function and without using 3rd variable
Ans. 
To swap two numbers without using a swap function or a third variable, use arithmetic operations.
• Add the two numbers together and store the result in one of the variables

• Subtract the second number from the sum and store the result in the second variable

• Subtract the original first number from the sum and store the result in the first variable
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Q3. Write a custom Decorators
Ans. 
Custom decorators in Python allow you to modify or extend the behavior of functions or methods.
• Decorators are functions that wrap another function and modify its behavior.

• Use the @ symbol followed by the decorator function name above the function definition.

• Decorators can be used for logging, authentication, caching, etc.

• Example: def my_decorator(func): def wrapper(): print('Something is happening before the funct...read more
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Q1. What is moudles and packages
Ans. 
Modules are files containing Python code, while packages are directories containing modules.
• Modules are used to organize Python code into reusable files.

• Packages are used to organize modules into directories for better organization.

• Modules can be imported using the 'import' keyword, while packages are imported using dot notation.

• Example: 'import math' imports the math module, while 'import mypackage.mymodule' imports a
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Q2. What is __init__ and __init__.py
Ans. 
The __init__ method is a special method in Python classes used for initializing new objects. __init__.py is a special file used to define a package in Python.
• The __init__ method is called when a new object is created from a class and is used to initialize the object's attributes.

• __init__.py is a special file used to define a package in Python. It can be empty or contain initialization code for the package.

• The __init__....read more
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Q3. Largest count in a word
Ans. 
Find the word with the largest count of a specific character.
• Iterate through each word in the array

• Count the occurrences of the specific character in each word

• Keep track of the word with the largest count
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Q1. Package discussion
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