python i+=1与i=i+1的区别

''' 探索 i += 1 与 i = i+1 的区别 ''' ''' 对于不可变对象int str tuple 都会创建一个新的内存地址 ''' i = 0 print(id(i)) # 1564271360 i += 1 print(id(i)) # 1564271376 i = i + 1 print(id(i)) # 1564271392 ''' 对于可变类型对象 i+=1不会改变内存地址, i = i+1会改变内存地址 ''' list = [1,2,3] print(id(list)) # 78555136 list += [4] print(id(list)) # 78555136 list = list + [5] print(id(list)) # 78555497