学习笔记之a,b=b,a+b与a=b,b=a+b的区别

def YY(one):
    a,b,n=0,1,0
    while(n<one):
        print(b,end=‘ ‘)
        a,b=b,a+b   #a,b同时运行，此时b赋值给a,a==1.a+b赋值给b，#b==0+1==1                               
        n+=1
        print(a)
d=YY(3)

print(‘ ‘)    #加一个空格好分辨

def YY1(two):
    x,y,count=0,1,0
    while (count<two):
        print(y,end=" ")
        x=y                            #y赋值给x，即x==y==1
        y=x+y                        #x+y赋值给y,即y==x+y==1+1==2
        count+=1
        print(x)
c=YY1(3)

运行结果：
1 1
1 1
2 2
 
1 1
2 2
4 4