简单的python程序-写一个简单程序

You are the light of the world. A city located on a hill cannot be hidden. People do not light a lamp and put it under a basket but on a lampstand, and it gives light to all in the house. In te same way, let your light shine before people, so that they can see your good deeds and give honor to your Father in heaven.(Matthew 5:14-16)

你们是世上的光。城造在山上，是不能隐藏的。人点灯，不放在斗底下，是放在灯台上，就照亮一家的人。你们的光也当这样照在人前，叫他们看见你们的好行为，便将荣耀归给你们在天上的父。

写一个简单的程序

通过对四则运算的学习，已经初步接触了Python中内容，如果看官是零基础的学习者，可能有点迷惑了。难道敲几个命令，然后看到结果，就算编程了？这也不是那些能够自动运行的程序呀？

的确。到目前为止，还不能算编程，只能算会用一些指令（或者叫做命令）来做点简单的工作。

稍安勿躁，下面就开始编写一个真正的但是简单程序。

程序

下面一段，关于程序的概念，内容来自维基百科：

A computer program, or just a program, is a sequence of instructions, written to perform a specified task with a computer.[1] A computer requires programs to function, typically executing the program's instructions in a central processor.[2] The program has an executable form that the computer can use directly to execute the instructions. The same program in its human-readable source code form, from which executable programs are derived (e.g., compiled), enables a programmer to study and develop its algorithms. A collection of computer programs and related data is referred to as the software.

Computer source code is typically written by computer programmers.[3] Source code is written in