วิทยาเขตหลักของพื้นที่สูงมีกี่สี?
How many school colors is there for the main campus location of highland?
df = pd.DataFrame({'school_colors': ['blue','red','green'], 'main_campus_location': ['Highland','CampusX','CampusY']})
df[df['main_campus_location'] == 'Highland']['school_colors'].count()