The Zen of Python, by Tim Peters

Beautiful is better than ugly.

Explicit is better than implicit.

Simple is better than complex.

Complex is better than complicated.

Flat is better than nested.

Sparse is better than dense.

Readability counts.

Special cases aren’t special enough to break the rules.

Although practicality beats purity.

Errors should never pass silently.

Unless explicitly silenced.

In the face of ambiguity, refuse the temptation to guess.

There should be one-- and preferably only one–obvious way to do it.

Although that way may not be obvious at first unless you’re Dutch.

Now is better than never.

Although never is often better than rightnow.

If the implementation is hard to explain, it’s a bad idea.

If the implementation is easy to explain, it may be a good idea.

Namespaces are one honking great idea --let’s do more of those!
以下为翻译：

美丽优于丑陋;

清楚优于含糊;

简单优于复杂;

复杂优于繁琐;

平坦优于曲折;

宽松优于密集;

重要的是可读性;

特殊的案例不足以特殊到破坏规则;

尽管实践可以打破真理;

错误却不可置之不理;

除非另有明确要求;

面对模棱两可，拒绝猜测;

总会有一个 —— 最好是只有一个 ——显而易见的方式来明辨;

哪怕这种方式在开始的时候可能并不明显 —— 除非你是荷兰人;

现在有比没有好;

尽管没有经常好于现在;

如果如何实现很难被解释清楚，那么这个想法就是一个坏想法;

如果如何实现可以被很好的解释，那么这是一个好想法;

命名空间就是一个非常好的想法 —— 让我们在这方面多做些工作吧!