init_
On behalf of initialization
You can create a class
Then each instantiation and they will call this function
Let me give you chestnuts
class hehe:
def __init__(self):
print('gao')
a=hehe()
This __ the init __ meaning of existence, often assignment, or as a method of starting an internal
To be a metaphor, you create a class, like the establishment of a class, each instance, is a student, but as long as the students entered the class, we must give him a set of corresponding classes to attend classes this book, then this process, send books, assignments, which is done in the init
As for the self, which is to represent a student, a student, each student has a first attribute of each student, each time you run an instance method, or a change in the strength properties of the time, only to change his own, not a student failed the exam The whole class is considered hanging branches, right?
class xuesheng:
def __init__(self,n):
self.yuwen=n
def chengji(self):
print(self.yuwen)
a=xuesheng(100)
b=xuesheng(20)
a.chengji()
b.chengji()
A student, exam 100 points
A student, exam 20 points
They are, in init inside assignment, and is assigned to the self, it is this example
然后，想查看他们成绩，在调用一个成绩方法，打印出来的时候，就是他们各自，自己的成绩，这个时候，要调用self的属性，如果没有self，就凉凉了。对Python感兴趣或者是正在学习的小伙伴，可以加入我们的Python学习扣qun：784758214，看看前辈们是如何学习的！从基础的python脚本到web开发、爬虫、django、数据挖掘等，零基础到项目实战的资料都有整理。送给每一位python的小伙伴！每天都有大牛定时讲解Python技术，分享一些学习的方法和需要注意的小细节，点击加入我们的 python学习者聚集地
觉得文章还可以的话不妨收藏起来慢慢看，有任何意见或者看法欢迎大家评论！