【小小白学 Python】 请各位师兄多多指点，谢谢！

intial = 1000
rate = 0.05
numyears = 5
year = 1
while year <= numyears:
    intial = intial * (1+rate)
    print (year, intial)
    year +=1


# 增加 input () 的使用

principal = input ("What is your principal? ", )
principal = int (principal)
rate = 0.20
numyears = 5
year = 1
while year <= numyears:
    principal = principal * (1 + rate)
    print ("%3d %0.2f" % (year, principal))
    year += 1

Python科学计算环境推荐——Anaconda       参阅   http://www.jb51.net/article/51651.htm

Anaconda下载地址：http://continuum.io/downloads