Python 世界的 5 个有趣彩蛋

准备好在 Python 奇异世界中展开一场冒险了吗？从头脑体操到视觉盛宴，这里有 5 个令人着迷的彩蛋，将颠覆你对这门语言的认知。

1. 神奇的 Zen 模块

输入 import this，你会发现一条隐含智慧和幽默的禅宗格言，提醒你 Python 的哲学核心。

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 *right* now.
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!

2. 十进制精度

Python 对十进制浮点数非常认真。尝试输入 0.1 + 0.2 - 0.3，你可能会惊讶地发现结果并不是 0。这是由于浮点数在计算机中存储方式固有的误差造成的。

3. Unicode 魔力

Python 中的字符串是 Unicode 字符串，这打开了一个奇妙的可能性世界。尝试输入 'hello'.encode('utf-8')，你将看到一串看似乱码的字节序列。但如果再输入 'hello'.encode('utf-8').decode('utf-8')，你就会神奇地恢复原来的字符串！

4. ASCII 艺术

Python 拥有一项令人惊叹的特性，可以将文本转换为 ASCII 艺术。尝试输入以下代码：

import textwrap
import textart

text = "Python is awesome!"
art = textart.TextArt(text)
print(art.get_text())

你将看到一个精美的 ASCII 艺术版的 "Python is awesome!"

5. 递归彩蛋

Python 中有一个隐蔽的彩蛋，可以展示递归的美丽。输入 import sys，然后在终端中输入以下代码：

print(sys.getrecursionlimit())
sys.setrecursionlimit(1000)

你会看到 Python 的递归限制从默认的 1000 增加到了 1000。这允许你进行更深层次的递归调用，从而探索这门语言的递归能力。