【Python开发web】(3) －－ Python基础之一
2010-09-22 11:07:11 来源：WEB开发网 闂傚倸鍊搁崐鎼佸磹閹间礁纾归柟闂寸绾惧綊鏌熼梻瀵割槮缁惧墽鎳撻—鍐偓锝庝簻椤掋垺銇勯幇顖毿撻柟渚垮妼椤粓宕卞Δ鈧獮濠勭磽閸屾艾鈧懓顫濋妸鈺佺疅缂佸顑欓崥瀣煕椤愵偅绶氱紓鍐╂礋濮婂宕掑▎鎴М濠电姭鍋撻梺顒€绉甸幆鐐哄箹濞ｎ剙濡肩紒鎰殜閺屸€愁吋鎼粹€茬敖婵炴垶鎸哥粔鐢稿Φ閸曨垰鍐€妞ゆ劦婢€濞岊亪姊虹紒妯诲蔼闁稿海鏁诲濠氭晲婢跺﹤宓嗛梺缁樺姈缁佹挳宕戦幘璇叉嵍妞ゆ挻绋戞禍鐐叏濡厧浜鹃悗姘炬嫹
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始静下心来认真学习Python的基础：The Python Tutorial
今天看了前面的一些章节，见下图：
值得关注的要点有：
1) 中文字符的长度
经测试，一个中文字符占3个，见下图
2) 在一些语言中，“=”代表引用，在Python中是复制而非引用，见下图：
3) 在调用函数时，不按参数的顺序，直接指定参数名和值也可以传递，见下图：
图片看不清楚？请点击这里查看原图（大图）。
4) Python的代码规范，直到看到这段文字后，我才将Tab改为了4-space，受教了。
Now that you are about to write longer, more complex pieces of Python, it is a good time to talk about coding style. Most languages can be written (or more concise, formatted) in different styles; some are more readable than others. Making it easy for others to read your code is always a good idea, and adopting a nice coding style helps tremendously for that.
For Python, PEP 8 has emerged as the style guide that most projects adhere to; it promotes a very readable and eye-pleasing coding style. Every Python developer should read it at some point; here are the most important points extracted for you:
Use 4-space indentation, and no tabs.
4 spaces are a good compromise between small indentation (allows greater nesting depth) and large indentation (easier to read). Tabs introduce confusion, and are best left out.
Wrap lines so that they don’t exceed 79 characters.
This helps users with small displays and makes it possible to have several code files side-by-side on larger displays.
Use blank lines to separate functions and classes, and larger blocks of code inside functions.
When possible, put comments on a line of their own.
Use docstrings.
Use spaces around operators and after commas, but not directly inside bracketing constructs: a = f(1, 2) + g(3, 4).
Name your classes and functions consistently; the convention is to use CamelCase for classes and lower_case_with_underscores for functions and methods. Always use self as the name for the first method argument (see A First Look at Classes for more on classes and methods).
Don’t use fancy encodings if your code is meant to be used in international environments. Plain ASCII works best in any case.
系列文章：
【Python开发web】(1) -- 系统环境与框架的选择
【Python开发web】(2) -- 跟着教程步步来 -- QuickWiki
【Python开发web】(4) -- Python基础之中文字符
中查找“【Python开发web】(3) －－ Python基础之一”更多相关内容
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