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d="M90.461 40.316a26.753 26.753 0 0 1-7.702 2.109 13.445 13.445 0 0 0 5.897-7.417 26.843 26.843 0 0 1-8.515 3.253 13.396 13.396 0 0 0-9.79-4.233c-7.404 0-13.409 6.005-13.409 13.409 0 1.051.119 2.074.349 3.056-11.144-.559-21.025-5.897-27.639-14.012a13.351 13.351 0 0 0-1.816 6.742c0 4.651 2.369 8.757 5.965 11.161a13.314 13.314 0 0 1-6.073-1.679l-.001.17c0 6.497 4.624 11.916 10.757 13.147a13.362 13.362 0 0 1-3.532.471c-.866 0-1.705-.083-2.523-.239 1.706 5.326 6.657 9.203 12.526 9.312a26.904 26.904 0 0 1-16.655 5.74c-1.08 0-2.15-.063-3.197-.188a37.929 37.929 0 0 0 20.553 6.025c24.664 0 38.152-20.432 38.152-38.153 0-.581-.013-1.16-.039-1.734a27.192 27.192 0 0 0 6.692-6.94z"></path></svg> </span> <br> <span>资深软件开发工程师，业余马拉松选手。</span> </div>
Python是一种计算机编程语言。计算机编程语言和我们日常使用的自然语言有所不同，最大的区别就是，自然语言在不同的语境下有不同的理解，而计算机要根据编程语言执行任务，就必须保证编程语言写出的程序决不能有歧义，所以，任何一种编程语言都有自己的一套语法，编译器或者解释器就是负责把符合语法的程序代码转换成CPU能够执行的机器码，然后执行。Python也不例外。
Python的语法比较简单，采用缩进方式，写出来的代码就像下面的样子：
以开头的语句是注释，注释是给人看的，可以是任意内容，解释器会忽略掉注释。其他每一行都是一个语句，当语句以冒号结尾时，缩进的语句视为代码块。
缩进有利有弊。好处是强迫你写出格式化的代码，但没有规定缩进是几个空格还是Tab。按照约定俗成的惯例，应该始终坚持使用4个空格的缩进。
缩进的另一个好处是强迫你写出缩进较少的代码，你会倾向于把一段很长的代码拆分成若干函数，从而得到缩进较少的代码。
缩进的坏处就是“复制－粘贴”功能失效了，这是最坑爹的地方。当你重构代码时，粘贴过去的代码必须重新检查缩进是否正确。此外，IDE很难像格式化Java代码那样格式化Python代码。
最后，请务必注意，Python程序是大小写敏感的，如果写错了大小写，程序会报错。
Python使用缩进来组织代码块，请务必遵守约定俗成的习惯，坚持使用4个空格的缩进；
在文本编辑器中，需要设置把Tab自动转换为4个空格，确保不混用Tab和空格。
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