class Go:
def __init__(self):
self.dict={}
print("开始")
def __del__(self):
print("结束")
def __getitem__(self,value):
if type(value)==str:
return 123
else:
print(value.start)
print(value.stop)
print(value.step)
return "state"
return self.dict[value]
def __setitem__(self,key,value):
self.dict[key]=value
1
3
None
结束