绑定方法与非绑定方法的使用

'''
name = 'alex'
age = 18
sex = 'female'
'''

# -----------------------------------
import setings
import hashlib
import time

class People:
    def __init__(self,name,age,sex):
        self.id= self.create_id()
        self.name=name
        self.age=age
        self.sex=sex

    def tell_info(self):
        print('Name:%s  Age:%s  Sex;%s  Id:%s' % (self.name,self.age,self.age,self.id))
    #  绑定给对象，就应该由对象来调用，自动将对象本身当作第一个参数传入

    @classmethod
    def from_conf(cls):
        obj= cls(setings.name,
                    setings.age,
                    setings.sex
                    )
        return obj
    # 绑定给类，就应该有类来调用，自动将类本身当作第一个参数传入


    @staticmethod
    def create_id():
        m = hashlib.md5(str(time.time()).encode('utf-8'))
        return m.hexdigest()
    #  非绑定方法，不与类或者对象绑定，谁都可以调用没有自动传值一说
p1 = People('kingforn',28,'male')
p1.tell_info()

p2 = People.from_conf()  # from_conf(People)
p2.tell_info()

'''
执行结果：
    Name:kingforn  Age:28  Sex;28  Id:62586d7416e5fc7745fc3463474b1d71
    Name:alex  Age:18  Sex;18  Id:62586d7416e5fc7745fc3463474b1d71

'''