Cognext Analytics Senior Data Scientist Interview Questions and Answers

Mutable data types can be modified after creation, while immutable data types cannot be changed.

• Mutable data types: lists, dictionaries, sets

• Immutable data types: strings, tuples, integers

• Example: list is mutable - myList = [1, 2, 3]; tuple is immutable - myTuple = (1, 2, 3)

Clean code principles refer to writing code that is easy to read, understand, and maintain.

• Writing clear and descriptive variable names

• Breaking down complex functions into smaller, more manageable pieces

• Avoiding redundant or unnecessary code

• Following consistent formatting and indentation

• Writing comments to explain the purpose of the code