第二章

2.3 字符串

句点（.）使对变量的执行方法为title（）指定的操作
eg. print(name.title())
print(name.upper()) 全部大写
print(name.lower()) 全部小写
加号（+）合并字符串
eg. print(name+name1+’!’)
字符串中添加制表符\t
eg. print("\thello,world")
字符串中添加换行符\n
eg. print(“hi,gou dan\nhello,world”)
不显示字符串末尾的空格rstrip()开头的空格lstrip()
eg. print(name.rstrip())

将数值变量转化成字符串str()
注释：使用井号（#）+注释内容

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!