python是什么?能干什么?看菜鸟怎么样逆袭?
<div style="color: black; text-align: left; margin-bottom: 10px;">
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">第1</span>:python是什么?能干什么?</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">能用到Python 的<span style="color: black;">地区</span>非常多。无论是从入门级小白到专业级的大佬,数据挖掘、科学计算、图像处理、人工智能,Python 都<span style="color: black;">能够</span>胜任。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">或许是<span style="color: black;">由于</span>这种万能属性,<span style="color: black;">此刻</span>有<span style="color: black;">非常多</span>的小伙伴都<span style="color: black;">起始</span>学习 Python。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">而<span style="color: black;">此刻</span> Python 的<span style="color: black;">火热</span><span style="color: black;">已然</span>来到了程序员的圈子外,进入了国务院《新一代人工智能发展规划的<span style="color: black;">通告</span>》里。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python <span style="color: black;">亦</span><span style="color: black;">已然</span>走进了小学生的课程里,<span style="color: black;">并不</span>是小学生,为了你自己的发展前景,或许我才是最该学 Python 的人。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">万事开头难,给要学习python的<span style="color: black;">朋友</span>开个好头,初入编程行业不清楚自己<span style="color: black;">是不是</span>真的<span style="color: black;">能够</span><span style="color: black;">或</span>担心自己学不会。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">那样</span>在学习之前咱们得有一个<span style="color: black;">知道</span>的学习<span style="color: black;">目的</span>,<span style="color: black;">仔细</span>的学习线路,做到不<span style="color: black;">茫然</span>学习,少走弯路,在<span style="color: black;">这儿</span>给<span style="color: black;">大众</span>分享<span style="color: black;">有些</span>python入门的学习教程和<span style="color: black;">办法</span>,以及<span style="color: black;">日前</span>python最新的学习线路,欢迎<span style="color: black;">大众</span>加入python学习交流qq群:250933691</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、Python都被用在<span style="color: black;">哪里</span>?</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">自Python由Guido van Rossum于1989年底发明创建<span style="color: black;">败兴</span>,基于此项技术的网站和软件项目<span style="color: black;">已然</span>有了数千个。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python <span style="color: black;">因为</span>其独特性,使其在<span style="color: black;">各样</span>编程语言中脱颖而出,在全世界<span style="color: black;">持有</span><span style="color: black;">海量</span>拥护它的程序员。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python 的优点是什么?</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">简单、免费、兼容性、面向对象、 函数库</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在哪里<span style="color: black;">运用</span> Python 语言?爬虫Web 程序<span style="color: black;">研发</span> 桌面程序<span style="color: black;">研发</span> 科学计算 图像处理 人工智能</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">等以及其他的<span style="color: black;">各样</span>各样的方向Python 都<span style="color: black;">能够</span>胜任。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">针对</span><span style="color: black;">有些</span>从<span style="color: black;">将来</span><span style="color: black;">无</span>写过代码的人<span style="color: black;">来讲</span>,Python 的代码简洁易懂。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">亦</span>正是<span style="color: black;">由于</span>这个<span style="color: black;">原由</span>,与其他语言相比,python对小白跟友好。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">还有<span style="color: black;">便是</span> Python 编写的程序其可<span style="color: black;">守护</span>性很高,从<span style="color: black;">商场</span><span style="color: black;">方向</span>来看,这<span style="color: black;">亦</span><span style="color: black;">能够</span>很大程度上在降低<span style="color: black;">研发</span>成本的<span style="color: black;">同期</span><span style="color: black;">加强</span>程序员的生产力。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python与其他语言来对比(<span style="color: black;">这儿</span><span style="color: black;">咱们</span>和PHP来比较)Python vs PHP</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">从发展的<span style="color: black;">方向</span>来看,PHP 是一种面向网络的语言。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">一个 PHP 应用程序更像是一组单独的脚本,<span style="color: black;">乃至</span>可能<span style="color: black;">仅有</span>一个语义入口点。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">与此相应的是, Python 是一种多用途的语言,它<span style="color: black;">亦</span><span style="color: black;">能够</span>用于 Web <span style="color: black;">研发</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">基于 Python 的 Web 应用程序是一个成熟的应用程序,用它的内部状态,从<span style="color: black;">查找</span>到请求,都加载到内存中。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python 与 PHP 之间 Web <span style="color: black;">研发</span>比较1、 流行度</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">此刻</span>,要做到符合趋势或潮流,</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">有些</span>客户和<span style="color: black;">制品</span>所有者只想在<span style="color: black;">她们</span>的项目中<span style="color: black;">运用</span>最受欢迎和最流行的技术</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">这里</span><span style="color: black;">状况</span>下,<span style="color: black;">倘若</span>只顾搞<span style="color: black;">研发</span>但不管技术方向,很可能<span style="color: black;">最后</span>的结果<span style="color: black;">便是</span>没有客户和工作。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">亦</span><span style="color: black;">便是</span>说</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在学习任何东西之前,要<span style="color: black;">保证</span>要学的东西在<span style="color: black;">将来</span> 1 年、 5 年<span style="color: black;">乃至</span> 10 年内都符合潮流。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">PHP 和 Python 是世界上最流行的编程语言之一,这无需担心。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">PHP 被用来构建维基百科、雅虎、WordPress、Friendster、MailChimp、Flickr 等许多巨头。Python 则被用于构建 YouTube、Instagram、桌面版的 Dropbox、Reddit、Bitbucket、Quora、Spotify、Pinterest、Facebook 的内部服务以及PayPal!2、架构</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在你<span style="color: black;">选取</span>技术时,<span style="color: black;">各样</span>工具<span style="color: black;">亦</span>非常重要。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">它定义了你工作的简单性和便利性</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">倘若</span>一项技术为<span style="color: black;">区别</span>的任务<span style="color: black;">供给</span>多种工具,程序员<span style="color: black;">能够</span>确信他不必从头<span style="color: black;">起始</span>做所有事情。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">最流行的 PHP 框架是 Laravel、Symfony、CodeIgniter、Yii 1 和 2、Phalcon 等等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这些工具<span style="color: black;">能够</span>帮你创建功能强大且整洁的应用程序。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">而 Python 则<span style="color: black;">不可</span>自夸<span style="color: black;">持有</span>如此多的框架,用的最多的是 Django 和 Flask。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">然则</span>,<span style="color: black;">咱们</span><span style="color: black;">能够</span>向你<span style="color: black;">保准</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">因为</span> Python 社区的<span style="color: black;">持续</span>发展,这种局面很难快就会<span style="color: black;">出现</span>变化。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/1538045494997f773931179~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=%2BSIqotZOCRBx1KEyOFpglUqFhuA%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">3、学习</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这<span style="color: black;">一般</span>是每一个想学习编程人想要弄清楚的<span style="color: black;">第1</span>个问题</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">学习过程越容易,<span style="color: black;">她们</span>能越快<span style="color: black;">起始</span>工作和<span style="color: black;">挣钱</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">当然,这个类别的获胜者是 Python,它的语法更简单易学。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">PHP <span style="color: black;">必须</span><span style="color: black;">更加多</span>的时间和精力来<span style="color: black;">把握</span>,而Python <span style="color: black;">能够</span>让你在<span style="color: black;">无</span>代码中断的<span style="color: black;">状况</span>下几乎不<span style="color: black;">显现</span>错误,</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">因此</span>python更能使新手有<span style="color: black;">自信心</span>继续学习。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">从小白/新手的<span style="color: black;">方向</span>来看,你<span style="color: black;">倘若</span>想要<span style="color: black;">选取</span>一个更简单、更灵活的编程语言,<span style="color: black;">那样</span>Python是最为理想的</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python <span style="color: black;">准许</span>你创建安全的应用程序,而 PHP 要达到这个目的则<span style="color: black;">必须</span>额外的工具,PHP 是专门为 Web <span style="color: black;">研发</span>而创建的,在这方面应用得<span style="color: black;">更加多</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Java 与 Python 哪个更好?</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">有些</span><span style="color: black;">研发</span>人员声<span style="color: black;">叫作</span> Python 比 Java 更有生产力,但更应先说明的是: Python 和 Java 有什么区别?</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Java 是一个典型化的编程语言,这<span style="color: black;">寓意</span>着变量名<span style="color: black;">必要</span><span style="color: black;">表示</span>声明。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">相比之下</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">咱们</span>有动态类型的 Python,它不<span style="color: black;">必须</span>声明变量,<span style="color: black;">针对</span>编程语言的动态和静态类型有<span style="color: black;">非常多</span>争论。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">不外</span>请<span style="color: black;">重视</span><span style="color: black;">这般</span>一个特征:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python 是一个有着简单句法的多样性的语言。这使得 Python 被广泛应用于多个<span style="color: black;">行业</span>来写脚本,快速<span style="color: black;">研发</span>应用等等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Java 支持跨平台应用,而 Python 几乎与所有现代操作系统兼容,</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Java <span style="color: black;">针对</span>初学者<span style="color: black;">来讲</span>要比 Python <span style="color: black;">繁杂</span><span style="color: black;">非常多</span>,读 Python 代码<span style="color: black;">亦</span>比读 Java 代码简单,</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">倘若</span>你想让你的代码在哪里都能执行,那就选 Java;Java 的另一<span style="color: black;">优良</span><span style="color: black;">便是</span>能<span style="color: black;">创立</span>基于网络的应用程序。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Java 比 Python <span style="color: black;">繁杂</span>得多。<span style="color: black;">倘若</span>你<span style="color: black;">无</span>技术类的背景,学 Java 是个很艰难的过程;</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">另一面</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Java 能<span style="color: black;">运用</span>在<span style="color: black;">区别</span>环境中,<span style="color: black;">倘若</span>这个特点是你<span style="color: black;">必须</span>的,那你就选 Java吧。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python 前景<span style="color: black;">到底</span><span style="color: black;">怎样</span>?</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">以下数据来自智联招聘、看准网、拉勾网、前程无忧、中华英才网等招聘网站的数据<span style="color: black;">表示</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">随着 Python 语言的<span style="color: black;">连续</span>火热</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">针对</span> Python 技术人才的需求<span style="color: black;">亦</span>在<span style="color: black;">持续</span><span style="color: black;">增多</span>--日均需求量<span style="color: black;">乃至</span>达到了 15000+</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">北上广深等一线城市的需求<span style="color: black;">更加是</span>数量庞大。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在薪资<span style="color: black;">薪水</span>方面,Python <span style="color: black;">亦</span><span style="color: black;">无</span>让人失望。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">经过</span>分析来自全国的 12809 份样例资料<span style="color: black;">能够</span><span style="color: black;">发掘</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">全国 Python 工程师的平均月资能够达到 19160 元,</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">其中 20 - 30K 的工程师数量<span style="color: black;">更加是</span>超过了四成。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">虽然各大城市的薪资标准略有<span style="color: black;">区别</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">然则</span>这<span style="color: black;">亦</span>确实传递出一个信息,<span style="color: black;">倘若</span>想要年薪百万、<span style="color: black;">一晚上</span>暴富、成功走上人生巅峰,</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">对比 Java、C、C++ 等老牌语言</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python 是个绝佳的尝试。(你想迎娶白富美吗?你想当上CEO吗?你想<span style="color: black;">一晚上</span>暴富吗?快来学python吧)抽丝剥茧,深入<span style="color: black;">诠释</span> Python 语言</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">从上面数据来看:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">倘若</span>只能学习一门语言,除了 Python 别无他选。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">不论<span style="color: black;">针对</span>初学者还是有其他编程经验的<span style="color: black;">研发</span>者<span style="color: black;">来讲</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">第二:python零<span style="color: black;">基本</span><span style="color: black;">怎样</span>逆袭</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">做<span style="color: black;">研发</span>几年的时间,<span style="color: black;">倘若</span><span style="color: black;">大众</span><span style="color: black;">针对</span>学习Python的学习<span style="color: black;">办法</span>,学习路线都<span style="color: black;">能够</span>随时来问我。<span style="color: black;">博主</span>在<span style="color: black;">这儿</span><span style="color: black;">亦</span>为<span style="color: black;">大众</span>整理了一套适合新手入门的学习资料。<span style="color: black;">包含</span>书籍,视频,源码等等;</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">Python的语言特性</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python是一门<span style="color: black;">拥有</span>强类型(即变量类型是强制<span style="color: black;">需求</span>的)、动态性、隐式类型(不<span style="color: black;">必须</span>做变量声明)、<span style="color: black;">体积</span>写<span style="color: black;">敏锐</span>(var和VAR<span style="color: black;">表率</span>了<span style="color: black;">区别</span>的变量)以及面向对象(一切皆为对象)等特点的编程语言。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">获取<span style="color: black;">帮忙</span></strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">你<span style="color: black;">能够</span>很容易的<span style="color: black;">经过</span>Python解释器获取<span style="color: black;">帮忙</span>。<span style="color: black;">倘若</span>你想<span style="color: black;">晓得</span>一个对象(object)是<span style="color: black;">怎样</span>工作的,<span style="color: black;">那样</span>你所<span style="color: black;">必须</span>做的<span style="color: black;">便是</span>调用help()!<span style="color: black;">另一</span>还有<span style="color: black;">有些</span>有用的<span style="color: black;">办法</span>,dir()会<span style="color: black;">表示</span>该对象的所有<span style="color: black;">办法</span>,还有.__doc__会<span style="color: black;">表示</span>其文档:</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/1538045494942c0b7fe71fa~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=CKuRmVyZZivefaIce4J4xSRuMKA%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">语法</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python中<span style="color: black;">无</span>强制的语句终止字符,且代码块是<span style="color: black;">经过</span>缩进来指示的。缩进<span style="color: black;">暗示</span>一个代码块的<span style="color: black;">起始</span>,逆缩进则<span style="color: black;">暗示</span>一个代码块的结束。声明以冒号(:)字符结束,并且开启一个缩进级别。单行注释以井号字符(#)开头,多行注释则以多行字符串的形式<span style="color: black;">显现</span>。赋值(事实上是将对象绑定到名字)<span style="color: black;">经过</span>等号(“=”)实现,双等号(“==”)用于相等判断,”+=”和”-=”用于<span style="color: black;">增多</span>/减少运算(由符号右边的值确定<span style="color: black;">增多</span>/减少的值)。这适用于许<span style="color: black;">都数</span>据类型,<span style="color: black;">包含</span>字符串。你<span style="color: black;">亦</span><span style="color: black;">能够</span>在一行上<span style="color: black;">运用</span>多个变量。例如:</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/1538045494880dfebcd9ed8~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=ueQad%2Bm%2FLewvyqZzpPonmpGcvZQ%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">数据类型</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python<span style="color: black;">拥有</span>列表(list)、元组(tuple)和字典(dictionaries)三种基本的数据结构,而集合(sets)则<span style="color: black;">包括</span>在集合库中(但从Python2.5版本<span style="color: black;">起始</span>正式<span style="color: black;">作为</span>Python内建类型)。列表的特点跟一维数组类似(当然你<span style="color: black;">亦</span><span style="color: black;">能够</span>创建类似多维数组的“列表的列表”),字典则是具<span style="color: black;">相关</span>联关系的数组(<span style="color: black;">一般</span><span style="color: black;">亦</span>叫做哈希表),而元组则是不可变的一维数组(Python中“数组”<span style="color: black;">能够</span><span style="color: black;">包括</span>任何类型的元素,<span style="color: black;">这般</span>你就<span style="color: black;">能够</span><span style="color: black;">运用</span>混合元素,例如整数、字符串或是嵌套<span style="color: black;">包括</span>列表、字典或元组)。数组中<span style="color: black;">第1</span>个元素索引值(下标)为0,<span style="color: black;">运用</span>负数索引值能够从后向前<span style="color: black;">拜访</span>数组元素,-1<span style="color: black;">暗示</span>最后一个元素。数组元素还能指向函数。来看下面的用法:</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/153804549458204eea3bf57~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=rXAGYobO0CgJc%2BxufpdpiGdfAn8%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">字符串</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Python中的字符串<span style="color: black;">运用</span>单引号(‘)或是双引号(“)来进行标示,并且你还能够在<span style="color: black;">经过</span>某一种标示的字符串中<span style="color: black;">运用</span><span style="color: black;">另一</span>一种标示符(例如 “He said ‘hello’.”)。而多行字符串<span style="color: black;">能够</span><span style="color: black;">经过</span>三个连续的单引号(”’)或是双引号(“””)来进行标示。Python<span style="color: black;">能够</span><span style="color: black;">经过</span>u”This is a unicode string”<span style="color: black;">这般</span>的语法<span style="color: black;">运用</span>Unicode字符串。<span style="color: black;">倘若</span>想<span style="color: black;">经过</span>变量来填充字符串,<span style="color: black;">那样</span><span style="color: black;">能够</span><span style="color: black;">运用</span>取模运算符(%)和一个元组。<span style="color: black;">运用</span>方式是在<span style="color: black;">目的</span>字符串中从左至右<span style="color: black;">运用</span>%s来指代变量的位置,<span style="color: black;">或</span><span style="color: black;">运用</span>字典来代替,示例如下:</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/153804549453415c72cca1b~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=6HxmaL%2FUgqILiN%2BWEa7iF4SvsqE%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">流程<span style="color: black;">掌控</span>Python中<span style="color: black;">能够</span><span style="color: black;">运用</span>if、for和while来实现流程<span style="color: black;">掌控</span>。Python中并<span style="color: black;">无</span>select,取而代之<span style="color: black;">运用</span>if来实现。<span style="color: black;">运用</span>for来枚举列表中的元素。<span style="color: black;">倘若</span><span style="color: black;">期盼</span>生成一个由数字<span style="color: black;">构成</span>的列表,则<span style="color: black;">能够</span><span style="color: black;">运用</span>range()函数。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">函数</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">函数<span style="color: black;">经过</span>“def”关键字进行声明。可选参数以集合的方式出<span style="color: black;">此刻</span>函数声明中并紧跟着必选参数,可选参数<span style="color: black;">能够</span>在函数声明中被赋予一个默认值。已命名的参数<span style="color: black;">必须</span>赋值。函数<span style="color: black;">能够</span>返回一个元组(<span style="color: black;">运用</span>元组拆包<span style="color: black;">能够</span>有效返回多个值)。Lambda函数<span style="color: black;">是由于</span>一个单独的语句<span style="color: black;">构成</span>的特殊函数,参数<span style="color: black;">经过</span>引用进行传递,但<span style="color: black;">针对</span>不可变类型(例如元组,整数,字符串等)则<span style="color: black;">不可</span>够被改变。这是<span style="color: black;">由于</span>只传递了该变量的内存<span style="color: black;">位置</span>,并且<span style="color: black;">仅有</span>丢弃了旧的对象后,变量<span style="color: black;">才可</span>绑定一个对象,<span style="color: black;">因此</span>不可变类型是被替换而不是改变(译者注:虽然Python传递的参数形式本质上是引用传递,<span style="color: black;">然则</span>会产生值传递的效果)。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">类Python支持有限的多继承形式。私有变量和<span style="color: black;">办法</span><span style="color: black;">能够</span><span style="color: black;">经过</span>添加<span style="color: black;">最少</span>两个前导下划线和最多尾随一个下划线的形式进行声明(如“__spam”,这只是惯例,而不是Python的强制<span style="color: black;">需求</span>)。当然,<span style="color: black;">咱们</span><span style="color: black;">亦</span><span style="color: black;">能够</span>给类的实例取任意名<span style="color: black;">叫作</span>。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">导入</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">外边</span>库<span style="color: black;">能够</span><span style="color: black;">运用</span> import 关键字来导入。<span style="color: black;">同期</span>,你还<span style="color: black;">能够</span>用 from import 来导入所<span style="color: black;">必须</span>的函数。例如:</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/1538045494549eb8bf16716~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=mWvAOJUe40rkGxcH53VQzIdLPMI%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">小结</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">本教程并未涵盖Python语言的<span style="color: black;">所有</span>内容(<span style="color: black;">乃至</span>连一小部分都<span style="color: black;">叫作</span>不上)。Python有非常多的库以及<span style="color: black;">非常多</span>的功能特点<span style="color: black;">必须</span>学习,<span style="color: black;">因此</span><span style="color: black;">想要</span>学好Python你<span style="color: black;">必要</span><span style="color: black;">这里</span>教程之外<span style="color: black;">经过</span>其它方式,例如阅读Dive into Python。我<span style="color: black;">期盼</span>这个教程能给你一个很好的入门<span style="color: black;">指点</span>。<span style="color: black;">倘若</span>你觉得本文还有什么<span style="color: black;">地区</span>值得改进或添加,或是你<span style="color: black;">期盼</span>能够<span style="color: black;">认识</span>Python的哪方面内容,请留言。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">第三:2018年10月份最新python人工智能课程体系出炉</strong></p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/15380454946855284614586~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723895255&x-signature=9fosPYZNRRIE44fBZw1k9xeY%2F2Q%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">万事开头难,给要学习python的<span style="color: black;">朋友</span>开个好头,初入编程行业不清楚自己<span style="color: black;">是不是</span>真的<span style="color: black;">能够</span><span style="color: black;">或</span>担心自己学不会。 <span style="color: black;">那样</span>在学习之前咱们得有一个<span style="color: black;">知道</span>的学习<span style="color: black;">目的</span>,<span style="color: black;">仔细</span>的学习线路,做到不<span style="color: black;">茫然</span>学习,少走弯路,在<span style="color: black;">这儿</span>给<span style="color: black;">大众</span>分享<span style="color: black;">有些</span>python入门的学习教程和<span style="color: black;">办法</span>,以及<span style="color: black;">日前</span>python最新的学习线路,欢迎<span style="color: black;">大众</span>加入python学习交流qq群:250933691</p>
</div>
我赞同你的看法,你的智慧让人佩服,谢谢分享。 楼主的文章深得我心,表示由衷的感谢! 大势所趋,用于讽刺一些制作目的就是为了跟风玩梗,博取眼球的作品。
页:
[1]