python之禅&function
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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!
str(int)参数在括号里而不是dot形式
python中传参时不确定参数的数目,可以用splat arguments代替,即在函数参数列表中使用*args
from module import function
调用模块中的单个函数,用该方法调用的函数使用时前部不加模块名,类似还有:from module import *
防止引入函数与自定义函数重名,建议import module在tpye比较时int和float不加引号
在函数调用时不能以表达式作为参数,需先计算出表达式的值作为新变量
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