Python90-1 明确你所使用的Python版本

python --verion

输出：
Python 3.8.13

import sys
print(sys.version_info)
print(sys.version)

输出：
sys.version_info(major=3, minor=8, micro=13, releaselevel='final', serial=0)
3.8.13 (default, Mar 28 2022, 06:59:08) [MSC v.1916 64 bit (AMD64)]

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!

python之禅，写自Tim Peters

美丽胜过丑陋。
清楚胜过模糊。
简单胜过复杂。
复杂胜过错综复杂。
扁平胜过嵌套。                              # 拒绝非常多层的嵌套
稀疏胜过稠密。
可读性非常重要。                            # 遵循代码规范
特殊情况不足以破坏规则。
实用性胜过单纯。
错误不该被安静地跳过。                       # 要么处理错误，要么抛出错误
除非显式消除。
面对歧义，拒绝猜测。                         # 不要写容易产生歧义的代码
应该有一种而且最好是只有一种明显的方法来做一件事。
尽管这种方式可能不那么显然，除非你是荷兰人。     # ？大概是因为作者是荷兰人
现在去做而不是推到以后，                     # 简陋的实现比没有好
即使将来比现在好。
如果实现很难解释，那么这是个坏主意。       
如果实现很易解释，那么可能是好主意。
命名空间是个好想法，让我们做更多命名空间。