Python 如何将单词列表转换为句子字符串？
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How do I turn a list of words into a sentence string?
提问by user3477556
I have this list
我有这个清单
[['obytay'], ['ikeslay'], ['ishay'], ['artway']]
where I need it to look like
我需要它看起来像
obytay ikeslay ishay artway
Can anybody help? I tried using joinbut I can't get it to work.
有人可以帮忙吗？我尝试使用join但我无法让它工作。
采纳答案by sshashank124
You have a list in a list so its not working the way you think it should. Your attempt however was absolutely right. Do it as follows:
您在列表中有一个列表，因此它没有按照您认为的方式工作。然而你的尝试是绝对正确的。请按以下步骤操作：
' '.join(word[0] for word in word_list)
where word_list is your list shown above.
其中 word_list 是上面显示的列表。
>>> word_list = [['obytay'], ['ikeslay'], ['ishay'], ['artway']]
>>> print ' '.join(word[0] for word in word_list)
obytay ikeslay ishay artway
Tobey likes his wart
Tobey likes his wart
回答by thefourtheye
It is a list of strings. So, you need to chain the list of strings, with chain.from_iterablelike this
它是一个字符串列表。所以，你需要chain.from_iterable像这样链接字符串列表
from itertools import chain
print " ".join(chain.from_iterable(strings))
# obytay ikeslay ishay artway
It will be efficient if we first convert the chained iterable to a list, like this
如果我们首先将链式可迭代对象转换为列表，这将是有效的，就像这样
print " ".join(list(chain.from_iterable(strings)))
回答by Kei Minagawa
You can also use reduce.
您也可以使用reduce.
l = [['obytay'], ['ikeslay'], ['ishay'], ['artway']]
print " ".join(reduce(lambda a, b: a + b, l))
#'obytay ikeslay ishay artway'
