Question

What does the code 'df.nlargest(n, 'value')' do?

1) Return the top n rows of dataframe sorted by the 'value' column
2) Return the bottom n rows of dataframe sorted by the 'value' column
3) Return the largest n values from the 'value' column in the dataframe
4) Sort the dataframe in descending order based on the 'value' column and return the first n rows

Answer 1

The code 'df.nlargest(n, 'value')' is used in pandas to sort a dataframe by a specific column and return the top n rows based on the values in that column.

Step-by-step explanation:

The code 'df.nlargest(n, 'value')' is used in pandas, which is a Python library for data manipulation and analysis. This code is used to sort a dataframe by a specific column and return the top n rows based on the values in that column.

Option 1) Return the top n rows of the dataframe sorted by the 'value' column is the correct answer.

For example, if we have a dataframe with a column named 'value' and we want to get the top 5 rows with the largest values in that column, we can use the code 'df.nlargest(5, 'value')'.