#以浮点数展示的等差数列
def rang(start,stop,n):
 start=float('%.2f' % start)
 stop=float('%.2f'% stop)
 n=int('%.d' % n)
 step=(stop-start)/n
 lst=[start]
 g = 0
 while g!=n:
 start=start+step
 n=n-1
 lst.append(round((start),2))
 return lst

r = rang(1,8,10)
print(r)