duck typing

class WebDevelopment:
    def syllabus(self):
        print("Web Development Syllabus")

class DataScience:
    def syllabus(self):
        print("Data Science Syllabus")

class_parser = lambda class_obj: [obj.syllabus() for obj in class_obj]

web_dev_course = WebDevelopment()
data_science_course = DataScience()

class_parser([web_dev_course, data_science_course])