在空行上拆分<textarea>帖子

Question

我有一个表格:

<textarea name="test">

假设用户输入以下文本:

This is the first paragraph
It has two lines

This is the second paragraph

我想把这个文本分成一个列表["这是第一段\n它有两行","这是第二段"]

我认为这会奏效:

temp = self.request.get("test")
list = re.split(r'\n\n', temp)

但事实并非如此.然而,

temp = self.request.get("test")
list = re.split(r'\n', temp)

产生以下列表:["这是第一行","","这是第二行"]

我错过了什么？

也:

假设在to文本之间可能有一个或两个空行,这是否有意义？

temp = self.request.get("test")
list = re.split(r'(\n){2,3}', temp)

解:

在下面的帮助下,

我发现以下代码适用于我的情况:

temp = self.request.get("test")
list = [l for l in temp.split('\r\n\r\n') if l.split()]

我认为断线可能取决于输入来自哪个系统,因此它可能不是完美的解决方案.

Answer 1

我认为re模块可能有点矫枉过正.只需拆分内容\n并删除空字符串即可.

>>> s = """This is the text
... 
... I am interested in splitting,
... 
... 
... but I want to remove blank lines!"""
>>> lines = [l for l in s.split("\n") if l]
>>> lines
['This is the text', 'I am interested in splitting,', 'but I want to remove blank lines!']

它string.split似乎也快了两倍.

> python -m timeit -s 's = "This is the text\n\nthat I want to split\n\n\nand remove empty lines"; import re;' '[l for l in re.split(r"\n", s) if l]'   
100000 loops, best of 3: 2.84 usec per loop

> python -m timeit -s 's = "This is the text\n\nthat I want to split\n\n\nand remove empty lines"' '[l for l in s.split("\n") if l]'                    
1000000 loops, best of 3: 1.08 usec per loop