一，繼承
class person(object):
def __init__(self, name, ***):
self.name = name
self.*** = ***
def print_title(self):
if self.*** == "male":
print("man")
elif self.*** == "female":
print("woman")
class child(person): # child 繼承 person
pass
lice = child("lice", "female")
peter = person("peter", "male")
print(lice.name, lice.***, peter.name, peter.***) # 子類繼承父類方法及屬性
二，多型，重寫父類方法
class person(object):
def __init__(self, name, ***):
self.name = name
self.*** = ***
def print_title(self):
if self.*** == "male":
print("man")
elif self.*** == "female":
print("woman")
class child(person): # child 繼承 person
三，子類重寫建構函式
class person(object):
def __init__(self,name,***):
self.name = name
self.*** = ***
class child(person): # child 繼承 person
def __init__(self,name,***,mother,father):
self.name = name
self.*** = ***
self.mother = mother
self.father = father
lice = child("lice","female","haly","peter")
print(lice.name,lice.***,lice.mother,lice.father)
四，父類建構函式包含很多屬性，子類僅需新增1、2個，會有不少冗餘的**，這邊，子類可對父類的構造方法進行呼叫
class person(object):
def __init__(self,name,***):
self.name = name
self.*** = ***
class child(person): # child 繼承 person
def __init__(self,name,***,mother,father):
person.__init__(self,name,***) # 子類對父類的構造方法的呼叫
self.mother = mother
self.father = father
# self.name='haha'
lice = child("lice","female","haly","peter")
print(lice.name,lice.***,lice.mother,lice.father)
五，多重繼承，新建乙個類 baby 繼承 child ， 可繼承父類及父類上層類的屬性及方法，優先使用層類近的方法，
#coding:utf-8
class person(object):
def __init__(self, name, ***):
self.name = name
self.*** = ***
def print_title(self):
if self.*** == "male":
print("man")
elif self.*** == "female":
print("woman")
class child(person):
pass
class baby(child):
pass
lice = baby("lice", "female") # 繼承上上層父類的屬性
print(lice.name, lice.***)
lice.print_title() # 可使用上上層父類的方法
print('***************===')
class child(person):
def print_title(self):
if self.*** == "male":
print("boy")
elif self.*** == "female":
print("girl")
class baby(child):
pass
lice2 = baby("lice2", "female")
print(lice2.name, lice2.***)
lice2.print_title() # 優先使用上層類的方法
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