Question

The default split method in Python treats consecutive spaces as a single delimiter. But if you specify a delimiter string, consecutive delimiters are not collapsed:

>>>  aaa .split( a )
[  ,   ,   ,   ]

如何最直截了当地打破连续的界线? 我知道,我只能从结果清单中删除空洞之处:

>>> result =  aaa .split( a )
>>> result
[  ,   ,   ,   ]
>>> result = [item for item in result if item]

但是,是否有更方便的办法?

Answer 1

You can use re.split with a regular expression as the delimiter, as in:

re.split(pattern, string[, maxsplit=0, flags=0])

Answer 2

你们可以做到:

string =  aaa 
result = [s for s in string.split( a ) if s]

Or you could switch to regular expressions:

string =  aaa 
result = re.split( a+ , string)

Answer 3

您可以定期表达:

re.split(pattern, string[, maxsplit=0, flags=0])

页: 1

re.split( a+ ,  aaa )

Answer 4

我认为,你的解决办法是完美的。此处为:

filter(bool,  aaa .split( a ))

也许不像作为理解清单那样明显。

Answer 5

No, there isn t a more convenient way. Either you write your own split function, or do the removing empty strings.

But your solution seems very clear and pythonic.

Answer 6

虽然这并非你所要求的那样,但你可以通过使用<条码><>><>>>,消除所有非人类的症状:

>>> result
[  ,   ,   ]
>>> set(result)
set([  ])

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