Python全系列教程：备考二级Python超级仔细课程
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">https://www.afuketang.com/video/qgjsj-ej-python-qcb</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//p1.itc.cn/q_70/images01/20231215/ef6b689d69f349428cabcad7eab8f127.png" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">1.Hello world</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">安装完Python之后，打开IDLE(Python GUI) ，该程序是Python语言解释器,你写的语句能够立即运行。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">咱们</span>写下一句著名的程序语句：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q2.itc.cn/images01/20240524/1aad981c18654592b4469e55a63c058c.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">并按回车，你就能看到这句被K&R引入到程序世界的名言。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在解释器中<span style="color: black;">选取</span>"File"--"New Window" 或快捷键 Ctrl+N , 打开一个新的编辑器。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">写下如下语句：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/0baa4c4b05234e09b39db0e85db86804.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">保留</span>为a.py文件。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">按F5,你就<span style="color: black;">能够</span>看到程序的运行结果了。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这是Python的第二种运行方式.</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">找到你<span style="color: black;">保留</span>的a.py文件并双击<span style="color: black;">亦</span><span style="color: black;">能够</span>看到程序结果。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python的程序能够直接运行,对比Java,这是一个<span style="color: black;">优良</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">2.国际化支持</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">咱们</span>换一种方式来问候世界.新建一个编辑器并写如下代码:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/668543591f5c4e0bbb2985eef163ab1e.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在你<span style="color: black;">保留</span>代码的时候,Python会提示你<span style="color: black;">是不是</span>改变文件的字符集,结果如下:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q5.itc.cn/images01/20240524/05260785046e4f5aa6f1ae6171f69de8.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">将该字符集改为<span style="color: black;">咱们</span>更<span style="color: black;">熟练</span>的形式:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q7.itc.cn/images01/20240524/2016f6a732914776bfdfd73ef1f68000.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">程序<span style="color: black;">同样</span>运行良好。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">3.方便易用的计算器</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">用微软附带的计算器来计数实在太麻烦了.打开Python解释器,直接进行计算:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q4.itc.cn/images01/20240524/ca1486aa58d14846a519696caba3fb11.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">4.字符串,ASCII和UNICODE</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">能够</span>如下打印出预定义输出格式的字符串:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q1.itc.cn/images01/20240524/9a92176ebd1546138d917586c4033cb6.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">字符串是怎么<span style="color: black;">拜访</span>的?请看这个例子:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q4.itc.cn/images01/20240524/f14bf55979894b36b6f13d4ae1eddf6b.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">请<span style="color: black;">重视</span>ASCII和UNICODE字符串的区别:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/d9bea2fb7e4f4740bcae5c67421cee9d.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">5.<span style="color: black;">运用</span>List</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">类似Java里的List,这是一种方便易用的数据类型:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q2.itc.cn/images01/20240524/c9c994cbeb844623bf898d2e059e3821.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6.<span style="color: black;">要求</span>和循环语句</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/bd454bccb245413bbce3b939fed1a0b8.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">7.定义函数</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q7.itc.cn/images01/20240524/2301de80c41d4de08470605914c4a96e.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">并且,介绍一个方便好用的函数:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q6.itc.cn/images01/20240524/4fe860183c92489692df8ec1eb9dba0e.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">8.文件I/O</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/191c30d0187c4af7a10271e283f721d6.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">9.<span style="color: black;">反常</span>处理</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/be1cc864bd9a41fb80a2d9f435d5e5cd.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">10.类和继承</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q8.itc.cn/images01/20240524/f420ff526df44e8d917acd184f72aa80.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">11.包机制</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">每一个.py文件<span style="color: black;">叫作</span>为一个module,module之间<span style="color: black;">能够</span>互相导入.请参看以下例子:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q5.itc.cn/images01/20240524/efbec67c7fbc40058027fa8b0c42fa29.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q2.itc.cn/images01/20240524/4d001a05d1754765a07cd79d643320d7.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">module<span style="color: black;">能够</span>定义在包里面。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python定义包的方式稍微有点古怪,假设<span style="color: black;">咱们</span>有一个parent文件夹,该文件夹有一个child子文件夹，child中有一个module a.py。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">怎样</span>让Python<span style="color: black;">晓得</span>这个文件层次结构?很简单,<span style="color: black;">每一个</span>目录都放一个名为_init_.py 的文件。该文件内容<span style="color: black;">能够</span>为空。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这个层次结构如下所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q9.itc.cn/images01/20240524/bd7d2e1fcde345a191b3a6e082262b2d.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">那样</span>Python<span style="color: black;">怎样</span>找到<span style="color: black;">咱们</span>定义的module?在标准包sys中,path属性记录了Python的包路径.你<span style="color: black;">能够</span>将之打印出来:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q5.itc.cn/images01/20240524/b6645a41ea8942f2a191c139b862c3ec.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">一般</span><span style="color: black;">咱们</span><span style="color: black;">能够</span>将module的包路径放到环境变量PYTHONPATH中,该环境变量会自动添加到sys.path属性。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">另一种方便的<span style="color: black;">办法</span>是编程中直接指定<span style="color: black;">咱们</span>的module路径到sys.path 中:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q0.itc.cn/images01/20240524/69ff0ea670b34ae98e158d6a53e496b6.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">12.总结</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">你会<span style="color: black;">发掘</span>这个教程相当的简单。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">许多Python特性在代码中以隐含方式提出,这些特性<span style="color: black;">包含</span>:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python不<span style="color: black;">必须</span>显式声明数据类型,关键字说明,字符串函数的解释等等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">一个<span style="color: black;">熟悉</span>的程序员应该对这些概念相当<span style="color: black;">认识</span>,<span style="color: black;">这般</span>在你挤出宝贵的一小时阅读这篇短短的教程之后,你能够<span style="color: black;">经过</span>已有知识的迁移类比尽快<span style="color: black;">熟练</span>Python,<span style="color: black;">而后</span>尽快能用它<span style="color: black;">起始</span>编程。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">当然,1小时学会Python颇有哗众取宠之嫌。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">确切的说,编程语言<span style="color: black;">包含</span>语法和标准库。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">语法相当于武术招式,而标准库应用实践经验则类似于内功,<span style="color: black;">必须</span><span style="color: black;">长时间</span><span style="color: black;">熬炼</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python学习了Java的长处,<span style="color: black;">供给</span>了<span style="color: black;">海量</span>极方便易用的标准库供程序员"拿来主义".(这<span style="color: black;">亦</span>是Python成功的<span style="color: black;">原由</span>)。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">但不管<span style="color: black;">怎么样</span>,<span style="color: black;">最少</span>你<span style="color: black;">此刻</span>会用Python代替繁琐的批处理写程序了。<span style="color: black;">期盼</span><span style="color: black;">哪些</span>真的能在一小时内读完本文并<span style="color: black;">起始</span><span style="color: black;">运用</span>Python的程序员会<span style="color: black;">爱好</span>这篇小<span style="color: black;">文案</span>,谢谢!<a style="color: black;"><span style="color: black;">返回<span style="color: black;">外链论坛：www.fok120.com</span>，查看<span style="color: black;">更加多</span></span></a></p>
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