TCS Python Software Developer Interview Questions and Answers

String,lists,dict and coding knowledge

Q1. Tell me difference between append and extend
Ans. 
Append adds a single element to the end of a list, while extend adds multiple elements from an iterable.
• Append adds one element at a time to the end of a list

• Extend adds multiple elements from an iterable (e.g. list, tuple) to the end of a list

• Append can be used to add a single element like a number or a string

• Extend is used to add multiple elements like another list or tuple

• Example: list1 = [1, 2, 3], list2 = [4, 5], ...read more
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Q2. List and tuple
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Q1. Explain about python frameworks
Ans. 
Python frameworks are pre-built libraries that provide a structure for developing web applications.
• Frameworks like Django, Flask, and Pyramid help streamline development by providing common functionalities like routing, templating, and database access.

• Django is a high-level framework that follows the MVC pattern and includes an ORM for database interactions.

• Flask is a lightweight framework that is easy to set up and al...read more
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Q1. What is array ?
Ans. 
An array is a data structure that stores a collection of elements, each identified by at least one array index or key.
• Arrays can store elements of the same data type or mixed data types.

• Elements in an array are accessed by their index, starting from 0.

• Arrays in Python are created using square brackets, e.g. my_array = ['apple', 'banana', 'cherry'].
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Q2. Write reversing six digit number using python
Ans. 
Reversing a six digit number using Python
• Convert the number to a string to easily manipulate each digit

• Use string slicing to reverse the order of the digits

• Convert the reversed string back to an integer for the final result
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Q3. What is python ?
Ans. 
Python is a high-level, interpreted programming language known for its simplicity and readability.
• Python is dynamically typed and garbage-collected.

• It supports multiple programming paradigms like procedural, object-oriented, and functional programming.

• Python has a large standard library and a vibrant community of developers.

• Example: print('Hello, World!')
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Q4. Different between list and tuples
Ans. 
Lists are mutable, tuples are immutable in Python.
• Lists are enclosed in square brackets [], tuples in parentheses ().

• Lists can be modified (add, remove, change elements), tuples cannot be modified once created.

• Lists are used for collections of similar items, tuples for fixed collections of dissimilar items.

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