EXL Service Associate Consultant 1 Interview Questions and Answers

Lists are mutable while Tuples are immutable.

• Lists use square brackets [] while Tuples use parentheses ().

• Lists can be modified while Tuples cannot be modified.

• Lists are used for homogenous items while Tuples are used for heterogenous items.

• Lists are slower than Tuples.

• Example of List: my_list = [1, 2, 3]

• Example of Tuple: my_tuple = (1, 'hello', 3.4)

To add or remove columns from a pandas dataframe, we can use the 'drop' and 'insert' methods.

• To remove a column, we can use the 'drop' method with the 'axis' parameter set to 1.

• To add a column, we can simply assign a new column to the dataframe with a name and values.

• To insert a column at a specific position, we can use the 'insert' method with the index and column name.

• We can also rename columns using the 'rename' met