number1=1 ; print("第一个输出结果",id(number1))

number2=number1 ; print("第二个输出结果",id(number2))

number3=1 ; print("第三个输出结果",id(number3))

number1=3 ; print("第四个输出结果",id(number1))

del number1 ; number4=1 ; print("第五个输出结果",id(number4))

print(3//2) ; print(3%2) ;print(--1) ; print(++1**0)