{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 4.1函数"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "<img src=\"images/ch4/1.png\">"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "函数是<font color=Red>__可以重复使用的、实现特定功能__</font>的一组程序语句，可以通过<font color=Red>__函数名__</font>进行调用，并通过传递不同<font color=Red>__参数__</font>获得不同的<font color=Red>__返回值__</font>。\n",
    "  \n",
    "函数是<font color=Red>__模块化程序设计__</font>的基础，不仅可以实现<font color=Red>__代码重用__</font>，还可以保证代码的<font color=Red>__一致性和可扩展性__</font>。\n",
    "\n",
    "本章通过实例讲解函数的定义、调用、参数传递、变量作用域和函数返回值等相关概念。同时简单介绍了匿名函数和递归函数的概念与应用、Python内置函数以及代码重用的实现方法。"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.5"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}