python面向对象05

"""开空间  调用__init__"""
# class A:pass
# class B(A):pass
# print(B.__bases__)

# 绑定方法和普通函数

from types import FunctionType, MethodType


# FunctionType：函数
# MethodType：方法
# class A:
#     def func(self):
#         print('infunc')
# a = A()
# print(A.func) # 函数
# print(a.func)  # 方法
# print(isinstance(a.func,FunctionType))  #False
# print(isinstance(a.func,MethodType)) #True
# print(isinstance(A.func,FunctionType))  #True
# print(isinstance(A.func,MethodType))    #False


# isinstance type两者对比
# a = 1
# b = 'abc'
# print(isinstance(a,int))    # True
# print(isinstance(a,float))    # Fasle
# print(isinstance(b,str))    # True

# a = 1
# b = 'abc'
# print(type(a) is int)  # True
# print(type(b) is str)  # True


# class Cat:
#     pass
#
# xiaobai = Cat()
# print(type(xiaobai) is Cat)  # True
# print(isinstance(xiaobai, Cat))  # True

# class Animal: pass
# class Cat(Animal): pass

# xiaobai = Cat()
# print(type(xiaobai) is Cat)  # True
# print(type(xiaobai) is Animal)  # False
# print(isinstance(xiaobai, Cat))  # True
# print(isinstance(xiaobai, Animal))  # True


# 类中各种方法
# class A:
#     name = "name-A"
#     def func1(self):pass
#     def func2(self):pass
#
# class B:pass
# class C(B,A):pass
# print(A.__bases__)#(<class 'object'>,)
# print(C.__base__)   #<class '__main__.B'>
# print(C.__bases__)  #(<class '__main__.B'>, <class '__main__.A'>)
# print(A.__dict__)  #查看类中所有存在的变量和属性
# print(A.__name__) # 查看类的名称
# print(A.__class__)  #<class 'type'>   查看类的类型，大部分类的类型都是type
# print(B.__class__)  #<class 'type'>
# print(C.__class__)  #<class 'type'>
# print(C.__module__)

# import module

# __doc__  文档说明

# class A:
#     '''
#     这个类是用来操作A的所有操作
#     '''
#     pass
# print(A.__doc__)  #    这个类是用来操作A的所有操作


class Curse(object):
    def __init__(self, name, proid, price):
        self.name = name
        self.proid = proid
        self.price = price

python = Curse('python', '6 month', '21000')
go = Curse('go', '4 month', '12000')

import pickle
# 写入文件
# with open('pickle_file','wb') as f:
# 格式 pickle.dump(对象名,文件句柄)
# pickle.dump(python,f)

# 读取文件

# with open('pickle_file','rb') as f:
#     python = pickle.load(f)
#     print(python) #<__main__.Curse object at 0x0000019465122978
#     print(python.__dict__)  #{'name': 'python', 'proid': '6 month', 'price': '21000'}
#     print(python.name) #python
#     print(python.price) #21000


#多个对象时的读取
import  pickle
#写入文件
# with open('pickle1_file','wb') as f:
#     pickle.dump(python,f)
#     pickle.dump(go,f)
#读取文件
with open('pickle1_file','rb') as f:
    while True:
        try:
            obj = pickle.load(f)
            print(obj.name,obj.price)
            # print(obj.__dict__)
        except EOFError:
            break