Paladin(Python)

1. 为避免整数频繁申请和销毁内存空间，Python 定义了一个小整数池[-5, 256]，这些整数对象是提前建立好的，不会被垃圾回收。
2. Python 解释器中使用了 intern(字符串驻留) 技术来提高字符串效率，如果有空格或长度超过 20 个字符，不启用 intern 机制。
3. Python 的 import 寻找路径为 sys.path()，环境变量是 PYTHONPATH。
4. Python 官方的包管理器是 pip，第三方库发布网址是 PyPI 。
5. Conda 是第三方包管理器。

Python 源码打包、二进制构建

setup.pypyproject.toml

# 源码打包 tar.gz/zip
python setup.py sdist

# 二进制构建 egg/whl
python setup.py bdist_egg
python setup.py bdist_wheel

# 安装
python setup.py install
# or
pip install .

# 安装（开发）
python setup.py develop
# or
pip install -e .

# 源码打包、二进制构建
python -m build

The Zen of Python, by Tim Peters 「Python 之禅」

EnglishChinese

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!

优美优于丑陋
明了优于隐晦
简单优于复杂
复杂优于凌乱
扁平优于嵌套
稀疏优于稠密
可读性很重要
即使实用比纯粹更优
特例亦不可违背原则
错误绝不能悄悄忽略
除非它明确需要如此
面对不确定性，拒绝妄加猜测
任何问题应有一种，且最好只有一种，显而易见的解决方法
尽管这方法一开始并非如此直观，除非你是那个荷兰人
做优于不做
然而不假思索还不如不做
很难解释的，必然是坏方法
很好解释的，可能是好方法
命名空间是个绝妙的主意，我们应好好利用它！