1，初始python历史
2配置环境变量
第一个Python程序 - hello, world!
向伟大的Dennis M. Ritchie先生致敬
Version: 0.1
Author: 骆昊
Date: 2018-02-26
请将该文件命名为hello.py并在终端中通过下面的命令运行它
python hello.py
"""
print('hello, world!')
# print("你好,世界！")
print('你好', '世界')
print('hello', 'world', sep=', ', end='!')
print('goodbye, world', end='!\n')
运行结果：
hello, world!
你好 世界
hello, world!goodbye, world!
Process finished with exit code 0
运行小猪佩奇
import this
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!
>>> 美胜于丑。
显式优于隐式。
简单胜于复杂。
复杂总比复杂好。
平的比嵌套的好。
稀疏胜于稠密。
可读性计数。
特殊情况不足以打破规则。
尽管实用性胜过纯洁性。
错误永远不会悄悄地过去。
除非明确沉默。
面对歧义，拒绝猜测的诱惑。
应该有一种——最好只有一种——显而易见的方法来做到这一点。
不过，如果不是荷兰语的话，这种方式一开始可能并不明显。
现在总比没有好。
虽然从来没有比现在更好。
如果实现很难解释，那是个坏主意。
如果实现很容易解释，这可能是一个好主意。
名称空间是一个非常好的主意——让我们做更多的事情吧！