From 3c3d1a2ed62a59f6c044bc9dd6d31eb0d01c4d66 Mon Sep 17 00:00:00 2001 From: feilong Date: Fri, 24 Dec 2021 00:37:50 +0800 Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=E7=AC=AC=E5=9B=9B=E7=AB=A0?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../student.json" | 17 +- .../student.md" | 116 ++++++++++++ .../student.json" | 17 +- .../student.md" | 102 ++++++++++ .../evolope.json" | 20 +- .../evolope.md" | 130 +++++++++++++ .../inherent.json" | 21 +-- .../inherent.md" | 127 +++++++++++++ .../poly.json" | 20 +- .../poly.md" | 175 ++++++++++++++++++ .../point.json" | 23 +-- .../point.md" | 112 +++++++++++ .../abstract.json" | 17 +- .../abstract.md" | 116 ++++++++++++ .../access.json" | 16 +- .../access.md" | 111 +++++++++++ .../object_meta.json" | 17 +- .../object_meta.md" | 144 ++++++++++++++ main.py | 2 +- 19 files changed, 1170 insertions(+), 133 deletions(-) create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.md" create mode 100644 "data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.md" diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.json" index c9b13d4..81f3a31 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.json" @@ -1,17 +1,8 @@ { - "multiline": [ - { - "__init__": "init" - }, - { - "dump(self)": "dump()" - }, - { - "s = Student": "s = new Student" - } - ], - "source": "student.py", + "source": "student.md", "depends": [], "exercise_id": 56, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.md" new file mode 100644 index 0000000..0bef648 --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/1.\347\261\273\345\222\214\345\257\271\350\261\241\347\232\204\346\246\202\345\277\265/student.md" @@ -0,0 +1,116 @@ +# Python 类和对象 + +创建学生类, 创建一个学生列表，加入3个学生，循环打印学生信息 + +```python +# -*- coding: UTF-8 -*- +class Student: + def __init__(self, no, name, age): + # TODO(You): 请在此初始化成员 + + def dump(self): + # TODO(You): 请在此打印学生信息 + +if __name__ == '__main__': + students = [] + for i in range(0, 3): + s = Student(i, f'somebody_{i}', 20+i) + students.append(s) + + for s in students: + print('') + s.dump() +``` + +请选出下列对Student**实现不正确**的代码。 + +## template + +```python +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age + + def dump(self): + print(f"* no:{self.no}") + print(f"* name:{self.name}") + print(f"* age:{self.age}") + +if __name__ == '__main__': + students = [] + for i in range(0, 3): + s = Student(i, f'somebody_{i}', 20+i) + students.append(s) + for s in students: + s.dump() +``` + +## 答案 + +```python +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age + + def dump(): + print(f"* no:{self.no}") + print(f"* name:{self.name}") + print(f"* age:{self.age}") +``` + +## 选项 + +### A + +```python +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age + + def dump(self): + print(f"* no:{self.no}") + print(f"* name:{self.name}") + print(f"* age:{self.age}") +``` + +### B + +```python +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age + + def dump(self): + infos = [ + f"* no:{self.no}", + f"* name:{self.name}", + f"* age:{self.age}" + ] + for info in infos: + print(info) +``` + +### C + +```python +class Student: + def __init__(self, no, name, age): + self.fields = { + 'no': no, + 'name': name, + 'age': age + } + + def dump(self): + for field_name in self.fields: + field_value = self.fields[field_name] + print(f'* {field_name}:{field_value}') +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.json" index 378ecfa..9565a16 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.json" @@ -1,17 +1,8 @@ { - "multiline": [ - { - "no,": "_no" - }, - { - "self.name = name": "self.name = _name" - }, - { - "s.age": "s.age()" - } - ], - "source": "student.py", + "source": "student.md", "depends": [], "exercise_id": 54, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.md" new file mode 100644 index 0000000..658a51d --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/2.\347\261\273\346\210\220\345\221\230/student.md" @@ -0,0 +1,102 @@ +# Python 类成员 + +类成员变量可以直接访问，直接调用学生类的成员变量，打印学生信息 + +```python +# -*- coding: UTF-8 -*- +class Student: + # TODO(You): 请在此实现含有no/name/age 三个成员属性的学生类 + +def test(): + students = [] + for i in range(0, 3): + s = Student(i, f'somebody_{i}', 20+i) + students.append(s) + + for s in students: + print('') + print(f"* no:{s.no}") + print(f"* name:{s.name}") + print(f"* age:{s.age}") + +if __name__ == '__main__': + test() +``` + +以下对Student的实现， **功能不正确** 的代码是？。 + +## template + +```python +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age + +def test(): + students = [] + for i in range(0, 3): + s = Student(i, f'somebody_{i}', 20+i) + students.append(s) + + for s in students: + print('') + print(f"* no:{s.no}") + print(f"* name:{s.name}") + print(f"* age:{s.age}") + +if __name__ == '__main__': + test() +``` + +## 答案 + +```python +# 普通初始化函数添加成员 +class Student: + def __init__(no, name, age): + self.no = no + self.name = name + self.age = age +``` + +## 选项 + +### A + +```python +# 使用 @dataclass 可以简化实现 +from dataclasses import dataclass + +@dataclass +class Student: + no: int + name: str + age: int +``` + +### B + +```python +# 普通初始化函数添加成员 +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age +``` + +### C + +```python +# 使用 @dataclass + slot 可以简化实现并且优化内存占用 +from dataclasses import dataclass + +@dataclass +class Student: + __slots__ = ['no', 'name', 'age'] + no: int + name: str + age: int +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.json" index dd9e8ea..1449e17 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.json" @@ -1,20 +1,8 @@ { - "multiline": [ - { - "get_no(self)": "get_no()", - "get_name(self)": "get_name()", - "get_age(self)": "get_age()", - "inc_age(self)": "inc_age()" - }, - { - "self.age += 1": "self.age -= 1" - }, - { - "print(s.log)": "print(s.log())" - } - ], - "source": "evolope.py", + "source": "evolope.md", "depends": [], "exercise_id": 209, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.md" new file mode 100644 index 0000000..349fc8e --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/evolope.md" @@ -0,0 +1,130 @@ +# Python 封装 + +使用类的方法获取相关信息，可以将内部的实现细节封装起来 + +```python +# -*- coding: UTF-8 -*- +class Student: + def __init__(self, no, name, age): + # TODO(初始化) + + def no(self): + # TODO(返回编号) + + def name(self): + # TODO(返回名字) + + def age(self): + # TODO(返回年龄) + +if __name__ == '__main__': + s = Student(0, f'somebody', 20) + print(f'* {s.no()}') + print(f'* {s.name()}') + print(f'* {s.age()}') +``` + +以下对Student的实现，**不正确**的代码是？ + +## template + +```python +class Student: + def __init__(self, no, name, age): + self._no = no + self._name = name + self._age = age + + def no(self): + return self._no + + def name(self): + return self._name + + def age(self): + return self._age + +if __name__ == '__main__': + s = Student(0, f'somebody', 20) + print(f'* {s.no()}') + print(f'* {s.name()}') + print(f'* {s.age()}') +``` + +## 答案 + +```python +class Student: + def __init__(self, no, name, age): + self.no = no + self.name = name + self.age = age + + def no(self): + return self.no + + def name(self): + return self.name + + def age(self): + return self.age +``` + +## 选项 + +### A + +```python +class Student: + def __init__(self, no, name, age): + self._no = no + self._name = name + self._age = age + + def no(self): + return self._no + + def name(self): + return self._name + + def age(self): + return self._age +``` + +### B + +```python +class Student: + def __init__(self, no, name, age): + self.info = { + 'no': no, + 'name': name, + 'age': age + } + + def no(self): + return self.info['no'] + + def name(self): + return self.info['name'] + + def age(self): + return self.info['age'] +``` + +### C + +```python +class Student: + def __init__(self, no, name, age): + self.info =[no, name, age] + + def no(self): + return self.info[0] + + def name(self): + return self.info[1] + + def age(self): + return self.info[2] +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.json" index 59c0e62..4aa2fdc 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.json" @@ -1,21 +1,8 @@ { - "multiline": [ - { - "People(object)": "People : object", - "Student(People)": "Student : People", - "Teacher(People)": "Teacher : People" - }, - { - "People(object)": "People implement object", - "Student(People)": "Student implement People", - "Teacher(People)": "Teacher implement People" - }, - { - "super().__init__(name, age)": "" - } - ], - "source": "inherent.py", + "source": "inherent.md", "depends": [], "exercise_id": 235, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.md" new file mode 100644 index 0000000..3b05e93 --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/inherent.md" @@ -0,0 +1,127 @@ +# Python 继承 + +下面是People、Student和Teacher三个类 + +```python +# -*- coding: UTF-8 -*- +class People(object): + def __init__(self, name, age): + self.name = name + self.age = age + +class Student: + def __init__(self, no, name, age): + self.name = name + self.age = age + self.no = no + +class Teacher: + def __init__(self, access_key, name, age): + self.name = name + self.age = age + self.access_key = access_key + +if __name__ == '__main__': + s = Student(0, f'somebody', 20) + t = Teacher('jladfja', 'linus', 0) + + print('# 教师') + print(f"* name:{t.name}") + print(f"* age:{t.age}") + print('') + print('# 学生') + print(f"* no:{s.no}") + print(f"* name:{s.name}") + print(f"* age:{s.age}") +``` + +实际上Student 和 Teacher 可以从 People 类继承，复用实现 +请选出下列对继承对使用，**正确**的选项。 + +## template + +```python +class People(object): + def __init__(self, name, age): + self.name = name + self.age = age + +class Student(People): + def __init__(self, no, name, age): + super().__init__(name, age) + self.no = no + +class Teacher(People): + def __init__(self, access_key, name, age): + super().__init__(name, age) + self.access_key = access_key + +if __name__ == '__main__': + s = Student(0, f'somebody', 20) + t = Teacher('jladfja', 'linus', 0) + + print('# 教师') + print(f"* name:{t.name}") + print(f"* age:{t.age}") + print('') + print('# 学生') + print(f"* no:{s.no}") + print(f"* name:{s.name}") + print(f"* age:{s.age}") +``` + +## 答案 + +```python +class Student(People): + def __init__(self, no, name, age): + super().__init__(name, age) + self.no = no + +class Teacher(People): + def __init__(self, access_key, name, age): + super().__init__(name, age) + self.access_key = access_key +``` + +## 选项 + +### A + +```python +class Student(People): + def __init__(self, no, name, age): + self.no = no + +class Teacher(People): + def __init__(self, access_key, name, age): + self.access_key = access_key +``` + +### B + +```python +class Student(People): + def __init__(self, no, name, age): + super.__init__(name, age) + self.no = no + +class Teacher(People): + def __init__(self, access_key, name, age): + super.__init__(name, age) + self.access_key = access_key +``` + +### C + +```python +class Student(People): + def __init__(self, no, name, age): + super(name, age) + self.no = no + +class Teacher(People): + def __init__(self, access_key, name, age): + super(name, age) + self.access_key = access_key +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.json" index 6b97dbc..6c581a5 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.json" @@ -1,20 +1,8 @@ { - "multiline": [ - { - "super().__init__(\"student\", name, age)": "" - }, - { - "super().__init__(\"teacher\", name, age)": "" - }, - { - "super().infos()": "self.infos()" - }, - { - "super().infos()": "super.infos()" - } - ], - "source": "poly.py", + "source": "poly.md", "depends": [], "exercise_id": 238, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.md" new file mode 100644 index 0000000..566e515 --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/3.\351\235\242\345\220\221\345\257\271\350\261\241\344\270\211\350\246\201\347\264\240/poly.md" @@ -0,0 +1,175 @@ +# Python 类多态 + +Student 和 Teacher 类都继承 People 类。Student 和 Teacher 类可以动态改变 People 类的 infos 方法，添加子类新增信息。程序入口可以对它们统一处理，打印他们的基本信息 + +```python +# -*- coding: UTF-8 -*- +class People: + def __init__(self, role, name, age): + self.name = name + self.age = age + self.role = role + + def infos(self): + return [ + f"name:{self.name}", + f"age:{self.age}", + f"role:{self.role}" + ] + +class Student(People): + def __init__(self, no, name, age): + super().__init__("student", name, age) + self.no = no + + def infos(self): + # TODO(You): 请在此实现学生类 infos 方法 + + +class Teacher(People): + def __init__(self, access_key, name, age): + super().__init__("teacher", name, age) + self.access_key = access_key + + def infos(self): + # TODO(You): 请在此实现教师类 infos 方法 + + +if __name__ == '__main__': + peoples = [ + Teacher("ajladfjkadf", "Linus", 0) + ] + + for i in range(0, 3): + s = Student(i, f'somebody_{i}', 20+i) + peoples.append(s) + + for p in peoples: + print() + for info in p.infos(): + print(info) +``` + +以下对 Student 和 Teacher 的 `infos` 方法实现正确的是？ + +## template + +```python +class People: + def __init__(self, role, name, age): + self.name = name + self.age = age + self.role = role + + def infos(self): + return [ + f"name:{self.name}", + f"age:{self.age}", + f"role:{self.role}" + ] + + +class Student(People): + def __init__(self, no, name, age): + super().__init__("student", name, age) + self.no = no + + def infos(self): + info_list = super().infos() + info_list.append(f'no:{self.no}') + return info_list + + +class Teacher(People): + def __init__(self, access_key, name, age): + super().__init__("teacher", name, age) + self.access_key = access_key + + def infos(self): + info_list = super().infos() + info_list.append(f'access_key:{self.access_key}') + return info_list + +if __name__ == '__main__': + peoples = [ + Teacher("ajladfjkadf", "Linus", 0) + ] + + for i in range(0, 3): + s = Student(i, f'somebody_{i}', 20+i) + peoples.append(s) + for p in peoples: + print() + for info in p.infos(): + print(info) +``` + +## 答案 + +```python +class Student(People): + ... + def infos(self): + info_list = super().infos() + info_list.append(f'no:{self.no}') + return info_list + +class Teacher(People): + ... + def infos(self): + info_list = super().infos() + info_list.append(f'access_key:{self.access_key}') + return info_list +``` + +## 选项 + +### A + +```python +class Student(People): + ... + def infos(self): + info_list = super.infos() + info_list.append(f'no:{self.no}') + return info_list + +class Teacher(People): + ... + def infos(self): + info_list = super.infos() + info_list.append(f'access_key:{self.access_key}') + return info_list +``` + +### B + +```python +class Student(People): + ... + def infos(self): + info_list = self.infos() + info_list.append(f'no:{self.no}') + return info_list + +class Teacher(People): + ... + def infos(self): + info_list = self.infos() + info_list.append(f'access_key:{self.access_key}') + return info_list +``` + +### C + +```python +class Student(People): + ... + def infos(self): + return [f'no:{self.no}'] + +class Teacher(People): + ... + def infos(self): + return [f'access_key:{self.access_key}'] +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.json" index b66f774..9686106 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.json" @@ -1,23 +1,8 @@ { - "one_line": { - "class Point": [ - "def class Point" - ], - "dot(self, right)": [ - "dot(right)" - ], - "self.x*right.x+self.y*right.y+self.z*right.z": [ - "x*right.x+y*right.y+z*right.z" - ], - "__init__": [ - "init" - ], - "= Point": [ - "new = Point" - ] - }, - "source": "point.py", + "source": "point.md", "depends": [], "exercise_id": 52, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.md" new file mode 100644 index 0000000..a96037b --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/4.\345\210\233\345\273\272\347\261\273/point.md" @@ -0,0 +1,112 @@ +# Python 类创建 + +创建点对象，有多种方式创建一个类的实例，我们称一个点的x、y、z都一样的点为对角点。 + +```python +# -*- coding: UTF-8 -*- +class Point: + # TODO(You): 添加代码支持类的创建 + +if __name__ == '__main__': + points = [] + + # TODO(You): 批量创建1000个对角点，第i个点的坐标是 (i,i,i) + + for point in points: + print(point) +``` + +以下对上述代码补全，不正确的是？ + +## template + +```python +class Point: + def __init__(self, x, y, z): + self.x = x + self.y = y + self.z = z + +if __name__ == '__main__': + points = [] + for i in range(1000): + points.append(Point(i,i,i)) + + for point in points: + print(point) +``` + +## 答案 + +```python +class Point: + def __init__(self, x, y, z): + self.x = x + self.y = y + self.z = z + +if __name__ == '__main__': + points = [] + for i in range(1000): + points.append(new Point(i,i,i)) +``` + +## 选项 + +### A + +```python +class Point: + def __init__(self, x, y, z): + self.x = x + self.y = y + self.z = z + +if __name__ == '__main__': + points = [] + for i in range(1000): + points.append(Point(i,i,i)) +``` + +### B + +```python +# 通过 @classmethod 装饰器，增加一个类级别的创建方法，批量创建 +class Point: + def __init__(self, x, y, z): + self.x = x + self.y = y + self.z = z + + @classmethod + def create_diag_points(cls, count): + # 在@classmethod修饰的方法中，其中 cls 表示 Point + points = [] + for i in range(count): + points.append(cls(i,i,i)) + return points + +if __name__ == '__main__': + points = Point.create_diag_points(1000) +``` + +### C + +```python +# 添加类静态方法，批量创建对角点 +class Point: + def __init__(self, x, y, z): + self.x = x + self.y = y + self.z = z + + @staticmethod + def create_diag_points(count): + points = [] + for i in range(count): + points.append(Point(i,i,i)) + return points + +if __name__ == '__main__': + points = Point.create_diag_points(1000) +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.json" index c32c937..8f0e4dd 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.json" @@ -1,17 +1,8 @@ { - "one_line": { - "@abc.abstractmethod": [ - "@abstractmethod" - ], - "pass": [ - "" - ], - "import abc": [ - "" - ] - }, - "source": "abstract.py", + "source": "abstract.md", "depends": [], "exercise_id": 51, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.md" new file mode 100644 index 0000000..16a2b9e --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/5.\346\212\275\350\261\241\347\261\273/abstract.md" @@ -0,0 +1,116 @@ +# Python 抽象类创建 + +使用 abc 库，创建抽象 BasePoint 类，创建 Point 子类，实现 dot 抽象方法，计算内积 + +```python +# -*- coding: UTF-8 -*- +import abc + +# TODO(You): 请实现抽象类 BasePoint + +class Point(BasePoint): + def __init__(self, x, y, z) -> None: + super().__init__(x, y, z) + + def dot(self, right): + return self.x*right.x+self.y*right.y+self.z*right.z + +if __name__ == '__main__': + p1 = Point(0, 1, 2) + p2 = Point(2, 4, 6) + assert p1.dot(p2) == 16 + p1 = BasePoint(0, 1, 2) + p2 = BasePoint(2, 4, 6) + assert p1.dot(p2) is None +``` + +以下对 BasePoint 抽象类实现 **正确** 的代码是？ + +## template + +```python +import abc + +class BasePoint: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + @abc.abstractmethod + def dot(self, right): + pass + + +class Point(BasePoint): + def __init__(self, x, y, z) -> None: + super().__init__(x, y, z) + + def dot(self, right): + return self.x*right.x+self.y*right.y+self.z*right.z + + +if __name__ == '__main__': + p1 = Point(0, 1, 2) + p2 = Point(2, 4, 6) + assert p1.dot(p2) == 16 + p1 = BasePoint(0, 1, 2) + p2 = BasePoint(2, 4, 6) + assert p1.dot(p2) is None +``` + +## 答案 + +```python +class BasePoint: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + @abc.abstractmethod + def dot(self, right): + pass +``` + +## 选项 + +### A + +```python +class BasePoint: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + @abstractmethod + def dot(self, right): + pass +``` + +### B + +```python +class BasePoint: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + def dot(self, right): + pass +``` + +### C + +```python +class BasePoint: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + @abc.abstractmethod + def dot(self, right): +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.json" index 1381f54..b3b7075 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.json" @@ -1,16 +1,8 @@ { - "one_line": { - "_func": [ - "func" - ], - "__test": [ - "test", - "_test", - "__test__" - ] - }, - "source": "access.py", + "source": "access.md", "depends": [], "exercise_id": 55, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.md" new file mode 100644 index 0000000..f09ea5c --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/6.\350\256\277\351\227\256\351\231\220\345\210\266/access.md" @@ -0,0 +1,111 @@ +# Python 访问控制 + +分别编写类内部的私有方法，模块级别的私有方法 + +请选出下列能**代码和注释一致**的代码。 + +## template + +```python +class Test: + def __init__(self) -> None: + pass + + def test(self): + self.__test() + + def __test(self): + '''类内部的私有方法''' + print("test") + + +def _func(): + '''模块级别的私有方法''' + print("file private") + +if __name__ == '__main__': + t = Test() + t.test() +``` + +## 答案 + +```python +class Test: + def test(self): + self.__test() + + def __test(self): + '''类内部的私有方法''' + print("test") + +def _func(): + '''模块级别的私有方法''' + print("file private") + +if __name__ == '__main__': + t = Test() + t.test() +``` + +## 选项 + +### A + +```python +class Test: + def test(self): + self._test() + + def _test(self): + '''类内部的私有方法''' + print("test") + +def _func(): + '''模块级别的私有方法''' + print("file private") + +if __name__ == '__main__': + t = Test() + t.test() +``` + +### B + +```python +class Test: + def test(self): + self.__test__() + + def __test__(self): + '''类内部的私有方法''' + print("test") + +def _func(): + '''模块级别的私有方法''' + print("file private") + +if __name__ == '__main__': + t = Test() + t.test() +``` + +### C + +```python +class Test: + def test(self): + self.__test() + + def __test(self): + '''类内部的私有方法''' + print("test") + +def func(): + '''模块级别的私有方法''' + print("file private") + +if __name__ == '__main__': + t = Test() + t.test() +``` diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.json" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.json" index afc27eb..386d4f8 100644 --- "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.json" +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.json" @@ -1,17 +1,8 @@ { - "one_line": { - "hasattr": [ - "has", - "attr", - "contains" - ], - "getattr": [ - "get", - "attr" - ] - }, - "source": "object_meta.py", + "source": "object_meta.md", "depends": [], "exercise_id": 53, - "type": "code_options" + "type": "code_options", + "author": "huanhuilong", + "notebook_enable": true } \ No newline at end of file diff --git "a/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.md" "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.md" new file mode 100644 index 0000000..2637689 --- /dev/null +++ "b/data/1.python\345\210\235\351\230\266/4.\351\235\242\345\220\221\345\257\271\350\261\241\347\274\226\347\250\213/7.\350\216\267\345\217\226\345\257\271\350\261\241\344\277\241\346\201\257/object_meta.md" @@ -0,0 +1,144 @@ +# Python 获取对象信息 + +过滤列表里所有含有 'z' 属性的对象，打印他们的 'x'+'y'+'z' 的值 + +```python +# -*- coding: UTF-8 -*- +class Point2D: + def __init__(self, x, y) -> None: + self.x = x + self.y = y + +class Point3D: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + +class Vector2D: + def __init__(self, x, y) -> None: + self.x = x + self.y = y + +class Vector3D: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + +def test(): + points = [ + Point2D(0, 1), + Point2D(0, 1), + Point3D(0, 1, 2), + Point3D(0, 1, 3), + Vector2D(0, 1), + Vector3D(0, 1, 4), + ] + + z_objects = [] + # TODO(You): 请在此过滤出含有'z'属性的对象，在过滤中打印出对应对象的'z'属性 + + for p in z_objects: + print('x+y+z:', p.x+p.y+p.z) + +if __name__ == '__main__': + test() +``` + +请选出下列能**正确**实现这一功能的选项。 + +## template + +```python + +class Point2D: + def __init__(self, x, y) -> None: + self.x = x + self.y = y + + +class Point3D: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + +class Vector2D: + def __init__(self, x, y) -> None: + self.x = x + self.y = y + + +class Vector3D: + def __init__(self, x, y, z) -> None: + self.x = x + self.y = y + self.z = z + + +def test(): + points = [ + Point2D(0, 1), + Point2D(0, 1), + Point3D(0, 1, 2), + Point3D(0, 1, 3), + Vector2D(0, 1), + Vector3D(0, 1, 4), + ] + + z_objects = [] + for p in points: + if hasattr(p, 'z'): + z = getattr(p, 'z') + print('get z attr:', z) + z_objects.append(p) + + for p in z_objects: + print('x+y+z:', p.x+p.y+p.z) + +if __name__ == '__main__': + test() +``` + +## 答案 + +```python +for p in points: + if hasattr(p, 'z'): + z = getattr(p, 'z') + print('get z attr:', z) + z_objects.append(p) +``` + +## 选项 + +### A + +```python +for p in points: + z = getattr(p, 'z') + print('get z attr:', z) + z_objects.append(p) +``` + +### B + +```python +for p in points: + if not hasattr(p, 'z'): + z = getattr(p, 'z') + print('get z attr:', z) + z_objects.append(p) +``` + +### C + +```python +for p in points: + if p.hasattr('z'): + z = p.getattr(p, 'z') + print('get z attr:', z) + z_objects.append(p) +``` diff --git a/main.py b/main.py index 180b9fe..acdcd69 100644 --- a/main.py +++ b/main.py @@ -9,5 +9,5 @@ if __name__ == '__main__': # walker = TreeWalker("data", "python", "python") # walker.walk() - md = MDWalker('data/1.python初阶/2.基础语法') + md = MDWalker('data/1.python初阶/4.面向对象编程') md.walk() -- GitLab