标题: 从字符串list中删除所有空串

参看:

Remove empty strings from a list of strings - [2010-10-02]
https://stackoverflow.com/questions/3845423/remove-empty-strings-from-a-list-of-strings

以Python3为例。

--------------------------------------------------------------------------
x   = ['a','','bb','','','ccc','','','','dddd']
while '' in x :
    x.remove( '' )

x最终等于:

['a', 'bb', 'ccc', 'dddd']
--------------------------------------------------------------------------

下面是一些探讨:

--------------------------------------------------------------------------
list( filter( None, x ) )
--------------------------------------------------------------------------
[i for i in x if i]
--------------------------------------------------------------------------
x[:]    = [i for i in x if i]

这种办法就地修改x
--------------------------------------------------------------------------
' '.join( x ).split()

这种办法有缺陷，考虑某个item中间含有空格的情形，最终结果非期望值，比如:

x   = ['a','','bb','','','ccc','','','','d d d d']
' '.join( x ).split()

['a', 'bb', 'ccc', 'd', 'd', 'd', 'd']
--------------------------------------------------------------------------
[i.strip() for i in x if i.strip()]
--------------------------------------------------------------------------
list( filter( lambda i:i.strip(), x ) )
--------------------------------------------------------------------------

注意领会精神，原始需求有所变化时，做相应修改。