A primer on operators was given in the Working with operators on a Series recipe from Chapter 1, Pandas Foundations, which will be helpful here. The Python arithmetic and comparison operators work directly on DataFrames, as they do on Series.
Working with operators on a DataFrame
Getting ready
When a DataFrame operates directly with one of the arithmetic or comparison operators, each value of each column gets the operation applied to it. Typically, when an operator is used with a DataFrame, the columns are either all numeric or all object (usually strings). If the DataFrame does not contain homogeneous data, then the operation is likely to fail. Let's see an example of this failure with the college dataset, which contains...
