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以“<span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"></span>by [http://www.ygclub....”为内容创建页面
<span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"></span>by [http://www.ygclub.org/bbs/space-uid-12814.html tracybryantliao]
<span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">part one： 第一节课</span><br/><span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">1- 复习函数的使用</span><br/>
<div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">将多条的命令组合包含在一起，并且用一个简单的名字来表示。</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">相当于增加了一条新的命令，如果指示机器人执行这条新命令，机器人将会执行这条新命令中所包含的多条命令。</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">def命令的形式：</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> <span style="word-wrap: break-word; font-weight: 700;">def ''新命令的名称 ''():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;"> ''包含的命令''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><font color="#ff0000" style="word-wrap: break-word;">1）def和新命令名称之间用空格隔开</font>；</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><font color="#ff0000" style="word-wrap: break-word;">2）新命令名称后紧跟着一对括号的一个冒号</font>；</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><font color="#ff0000" style="word-wrap: break-word;">3）新命令所包含的命令从第2行开始写，并且每行的开头与第1 行的开头有一定的缩进距离，一般是4个空格；</font></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><font color="#ff0000" style="word-wrap: break-word;">4）新命令在使用前要先定义。</font></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><br/></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">''#先定义''</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">def turn_right():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">turn_left()</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">turn_left()</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">turn_left()</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">''#后使用''</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">turn_right()</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">turn_off()</div>
<br/><br/><span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">2- 学习新命令</span><br/>
<div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">指示机器人根据不同条件，执行不同的命令。</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">判断命令的3种形式：</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">1) 形式1：</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> <span style="word-wrap: break-word; font-weight: 700;">if ''条件'' ():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">'' 命令''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">2) 形式2：</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> <span style="word-wrap: break-word; font-weight: 700;">if ''条件1'' ():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">'' 命令1''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;"> else:</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">'' 命令2 ''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><br/></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">3) 形式3:</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> <span style="word-wrap: break-word; font-weight: 700;">if ''条件1'' ():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">'' 命令1''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;"> elif ''条件2'' ():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">'' 命令2''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;"> else：</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">'' 命令3''</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><br/></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">判断命令的使用规范：</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">1) <font color="#ff0000" style="word-wrap: break-word;">if和elif 后面加条件（是或不是），最后以冒号结束；</font></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">2)<font color="#ff0000" style="word-wrap: break-word;"> else后面接冒号结束；</font></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">3)<font color="#ff0000" style="word-wrap: break-word;"> 和定义命令一样，每个条件所属的命令前必须有相同的缩进</font>。</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">可以有多种的判断条件，我们会使用到的条件包括：</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">1) front_is_clear 前面为空</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">2) right_is_clear 右边为空</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">3) left_is_clear 左边为空</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><br/></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">if right_is_clear():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> turn_right()</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> move()</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">elif front_is_clear():</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> move()</div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"><span style="word-wrap: break-word; font-weight: 700;">else:</span></div><div align="left" style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;"> turn_left()</div>
<br/><br/><span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">part two: 第二节课</span><br/><span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">练习挑战赛</span><br/><span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">先上台阶，再下台阶（台阶4层）</span><br/><span style="color: rgb(0, 0, 0); font-family: Tahoma, 'Microsoft Yahei', SimSun, sans-serif; font-size: 14px; line-height: 21px;">前三名中代码行数最少的人获胜</span>
