目录
- 一、类与数据类型
- 二、list.append()方法原理
- python3中统一了类与类型的概念，类就是类型
class Foo: pass obj = Foo() print(type(obj))
<class '__main__.Foo'>
lis = [1, 2, 3] lis2 = [4, 5, 6] print(type(lis))
<class 'list'>
- lis和lis2都是实例化的对象，因此lis使用append方法和lis2无关
lis.append(7) print(lis)
[1, 2, 3, 7]
print(lis2)
[4, 5, 6]二、list.append()方法原理
class OldboyStudent:
school = 'oldboy'
def __init__(self, name, age, gender):
self.name = name
self.age = age
self.sex = gender
def choose_course(self, name):
print(f'{name} choosing course')
stu1 = OldboyStudent('nick', 18, 'male')stu1.choose_course(1) # OldboyStudent.choose_course(stu1, 1)
1 choosing course
OldboyStudent.choose_course(stu1, 1)
1 choosing course
lis = [1, 2, 3] # lis = list([1,2,3]) print(type(lis))
<class 'list'>
lis.append(4) # list.append(lis,4) print(lis)
[1, 2, 3, 4]
list.append(lis, 5) print(lis)
[1, 2, 3, 4, 5]
