如何在正則表達式中使用已知的

Question

（新的正則表達式）中的表達式時，我正面臨着難以使用正則表達式操作的不等於。

我做這樣的事情：

re.findall("(<.*?>)", "i have a problem in doing <regex> for <not in> how can I do it") 

它給我的輸出，如：

['<regex>', '<not in>'] 

我想要做的正好相反，我所要的輸出是

[('i have a problem in doing'), ('for'), ('how can I do it')] 

但不知何故，我無法解決這個問題，一點幫助將不勝感激。

Answer 1

你需要re.split，取而代之的.*?它能夠更好地使用否定的字符類[^<]*拒不比賽外標記：

>>> re.split("<[^<]*>", "i have a problem in doing <regex> for <not in> how can I do it") 
['i have a problem in doing ', ' for ', ' how can I do it'] 

Answer 2

使用re.split()代替：

>>> re.split("\s*<[^<]*>\s*", "i have a problem in doing <regex> for <not in> how can I do it") 
['i have a problem in doing', 'for', 'how can I do it'] 

注意，這個刪除了前並根據您所需的輸出結尾拖尾空格字符。

Answer 3

print re.findall("(?:<.*?>)|([^<>]+)", "i have a problem in doing <regex> for <not in> how can I do it") 

你可以嘗試this.If你不想空的結果做

print [i for i in re.findall("(?:<.*?>)|([^<>]+)", "i have a problem in doing <regex> for <not in> how can I do it") if i]