Python Trainee Interview Questions and Answers for Freshers

List is mutable, tuple is immutable, dictionary is key-value pair

• List is enclosed in square brackets [], tuple in parentheses (), dictionary in curly braces {}

• List and tuple can store multiple values of any data type, dictionary stores key-value pairs

• List and dictionary are mutable, tuple is immutable

• List and tuple maintain order, dictionary does not

• List allows duplicate values, tuple and dictionary do not

Dataframe is a 2-dimensional labeled data structure with columns of potentially different types.

• Dataframe is a table-like data structure in Python

• It is used for data manipulation and analysis

• It can be created using various sources like CSV, Excel, SQL, etc.

• It is a part of the pandas library in Python

• Example: df = pd.read_csv('data.csv') creates a dataframe from a CSV file