We need to filter our dataframe by two conditions: grade and favorite color. We can filter our dataframe by grade by setting our dataframe equal to itself with the condition that the grade column is greater than 90:
students_df = students_df[students_df["grade"] > 90]
Now we want to do the same process for favorite color, but the problem is that we have two possible categories for inclusion in the filtered dataframe. How can we write code to include both possibilities in our final dataframe?