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Meta - Python for Data Analytics - Course PracticeNotebookInputOutputLogsComments (0)Output Data An error occurred: Unexpected end of JSON input Download notebook output navigate_nextminimize content_copyhelpSyntaxError: Unexpected end of JSON input...
In the example above, you could’ve decorated the class by writing PlayingCard = dataclass(PlayingCard).A common use of class decorators is to be a simpler alternative to some use cases of metaclasses. In both cases, you’re changing the definition of a class dynamically.Writing a class ...
load(f) # 计算平均分并更新数据 for student in loaded_data['students']: scores = [course['score'] for course in student['courses']] student['average_score'] = round(mean(scores), 2) # 保存更新后的数据 with open('students_updated.json', 'w', encoding='utf-8') as f: json.dump(...
一、用一套题，巩固python基础 Python教程 入门python由浅至深的进阶教程。一共分为10个阶段，内含基本...
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#http://127.0.0.1:8000/api/v1/courses/chapter/--- getrouter.register('chapter', CourseChapterView,'chapter') 序列化类: classCourseSectionSerializer(serializers.ModelSerializer):classMeta: model=CourseSection fields=['id','name','orders','section_link','duration','free_trail']classCourseChapte...
descriptionCourse description. Used for site meta and in footer. bioAuthor bio. Used in the footer. siteUrlURL of the deployed site (without trailing slash). twitterAuthor twitter handle, used in Twitter cards meta. fontsGoogle Fontsto load. Should be the font part of the URL in the embed...
df.info() <class 'pandas.core.frame.DataFrame'> RangeIndex: 6040 entries, 0 to 6039 Data columns (total 5 columns): UserID 6040 non-null int64 Gender 6040 non-null object Age 6040 non-null int64 Occupation 6040 non-null int64 Zip-code 6040 non-null object dtypes: int64(3), object(2...
在定义类的时候通过指定metaclass=ABCMeta可以将类声明为抽象类 抽象类是不能创建对象的 抽象类存在的意义是专门拿给其他类继承 abc模块中还有一个包装器abstractmethod 通过这个包装器可以将方法包装为抽象方法 必须要求子类进行重写 有抽象方法就是抽象类 #员工工资结算 from abc import ABCMeta,abstractclassmetho...