Python 在空格或连字符上拆分？
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Split on either a space or a hyphen?
提问by Richard
In Python, how do I split on either a space or a hyphen?
在 Python 中，如何拆分空格或连字符？
Input:
输入：
You think we did this un-thinkingly?
Desired output:
期望的输出：
["You", "think", "we", "did", "this", "un", "thinkingly"]
I can get as far as
我可以达到
mystr.split(' ')
But I don't know how to split on hyphens as well as spaces and the Python definition of split only seems to specify a string. Do I need to use a regex?
但我不知道如何在连字符和空格上进行拆分，而且 Python 的 split 定义似乎只指定了一个 string。我需要使用正则表达式吗？
采纳答案by Elazar
If your pattern is simple enough for one (or maybe two) replace, use it:
如果您的模式对于一个（或两个）来说足够简单replace，请使用它：
mystr.replace('-', ' ').split(' ')
Otherwise, use RE as suggested by @jamylak.
否则，请按照@jamylak 的建议使用 RE 。
回答by jamylak
>>> import re
>>> text = "You think we did this un-thinkingly?"
>>> re.split(r'\s|-', text)
['You', 'think', 'we', 'did', 'this', 'un', 'thinkingly?']
As @larsmans noted, to split by multiple spaces/hyphens (emulating .split()with no arguments) used [...]for readability:
正如@larsmans 所指出的，为了可读性，要由多个空格/连字符（.split()不带参数模拟）分割[...]：
>>> re.split(r'[\s-]+', text)
['You', 'think', 'we', 'did', 'this', 'un', 'thinkingly?']
Without regex (regex is the most straightforward option in this case):
没有正则表达式（在这种情况下，正则表达式是最直接的选择）：
>>> [y for x in text.split() for y in x.split('-')]
['You', 'think', 'we', 'did', 'this', 'un', 'thinkingly?']
Actually the answer by @Elazarwithout regex is quite straightforward as well (I would still vouch for regex though)
实际上，@Elazar没有使用正则表达式的答案也很简单（不过我仍然保证使用正则表达式）
回答by James
A regex is far easier and better, but if you're staunchly opposed to using one:
正则表达式要简单得多，也更好，但如果您坚决反对使用正则表达式：
import itertools
itertools.chain.from_iterable((i.split(" ") for i in myStr.split("-")))
