July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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Python
基础
｜
31
➊
本行代码将
animals.split
（没有
()
）传递给
help
方法。你可以向
help
方法中传入任
何对象、方法或模块，但如前所见，在传入方法时不应该把尾部的括号也包括进去。
Python
的返回值如下：
split(...)
S.split([sep [,maxsplit]]) -> list of strings
Return a list of the words in the string S, using sep as the
delimiter string. If maxsplit is given, at most maxsplit
splits are done. If sep is not specified or is None, any
whitespace string is a separator and empty strings are removed
from the result.
帮助文档的第一行说的是：
S.split([sep [,maxsplit]]) → list of strings
。翻译成汉
语，这告诉我们，对于字符串（
S
），我们有一个方法（
split
）、第一个可选参数（也就是
可以传入的对象）
sep
以及第二个可选参数
maxsplit
。参数名两边的方括号（
[]
）表明它
们是可选的，不是必需的。这个方法返回（
->
）一个字符串列表。
下一行说的是：
"Return a list of the words in the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.