python 写斐波那契数列， 复合赋值很特别

a = 0b = 1c = 1while c < 10:    print("fibonacci is", c)    c = a + b    a = b    b = c    print("a is", a)    print("b is", b)'''a = 0    b = 1    while b < 10:        print("fibonacci is ", b)    a, b = b, a + b

这里复合赋值的逻辑是，先执行c= a+b, 然后是a=b , b=c'''