Python 计算并输出斐波那契数列

import math

fbnq={1:1,2:1}
def fibs(n):
    i=3
    while i<=n:
        fbnq[i]=fbnq[i-1]+fbnq[i-2]
        i+=1
    print("计算完成\r\n开始显示")
    for x in fbnq:
        print("第%s个：%s"%(x,fbnq[x]))
    print("显示完成")
fibs(20)#计算多少个斐波那契数