Python textwrap.wrap导致\ n出现问题 [英] Python textwrap.wrap causing issue with \n

问题描述

所以我只是重新格式化了一堆代码以合并textwrap.wrap，却发现我所有的\ n都消失了.这是一个例子.

So I just reformatted a bunch of code to incorporate textwrap.wrap, only to discover all of my \n are gone. Here's an example.

from textwrap import wrap

def wrapAndPrint (msg, width=25):
  """ wrap msg to width, then print """

  message = wrap(msg, width)
  for line in message:
    print line

msg = ("Ok, this is a test. Let's write to a \nnewline\nand then "
       "continue on with this message")

如果我打印味精，我得到以下信息

If I print msg, I get the following

>>> print msg
Ok, this is a test. Let's write to a 
newline
and then continue on with this message
>>> 

但是，如果我将其包装，它看起来像这样:

However, if i send it to be wrapped it looks like this:

>>> wrapAndPrint(msg)
Ok, this is a test. Let's
write to a  newline and
then continue on with
this message
>>>

我认为这可能与从列表中打印字符串有关，所以我尝试调用特定的索引，因此我尝试使for循环看起来更像这样:

I thought it might have something to do with printing strings from a list, so I tried calling specific indices, so I tried making my for loop look more like this:

x = 0
for line in message:
  print line[x]
  x += 1

但这并没有什么区别.那么，我在这里想念的还是做错了什么?我确实需要换行符，也确实需要包装文本.

But that didn't make any bit of difference. So, what am I missing here, or doing wrong? I really need my newlines, and I also really need my text to be wrapped.

推荐答案

默认情况下，wrap()函数用单个空格替换空格字符(包括换行符).您可以通过传递关键字参数replace_whitespace=False来关闭此功能.

By default, the wrap() function replaces whitespace characters (including newline) with a single space. You can turn this off by passing the keyword argument replace_whitespace=False.

http://docs.python.org/library/textwrap. html#textwrap.TextWrapper.replace_whitespace

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