MySQL面向对象回顾3

shulanxt.com/database/mysqlvideo/p70

特殊方法:
class Foo:
   def__init__ (self,name) :
      self .name = name

   def show(self) :
      print (self.name)

   def__call__(self):
      pass

   def__getitem__(self, key) :
      pass

   def__setitem__(self,key,value) :
      pass

   def__delitem__(self, key) :
      pass

obj1 = Foo('eric')

obi1()
obj1['k']
obj1['k'] = 123
del obj[k]
obj.__dict__

Call?对象后面可以加（ 括号）