If you don't say much, code first
class A(object):
a = 't'
def __init__(self,config):
print('aa')
print(self.f())
self.config = config
def f(self):
print('a')
def ff(self):
print(self.config.a)
def extral(self):
print('extral a')
class B(object):
def __init__(self):
print('bb')
def f(self):
print('bbbb')
a = 'axx'
class C(A):
def __init__(self,config):
super(C,self).__init__(config)
print(" Call to order ")
config = B()
cc = C(config)
cc.ff()
The above involves 3 Classes （A,B,C),1 An example cc
Their calling relationship is like this
C Inherited B and A Class , Here is instantiation C The instance will be instantiated first B And then there was A, meanwhile A Do you have one B Object assigned to self.config. such C It's inherited . The next in C neutralization B Both of them can pass self.config.“ attribute ” To use
