在Python中查找以'\'（反斜杠）结尾的行的正则表达式是什么？ [英] What is the regular expression for finding line ending with '\'(backslash) in Python?

问题描述

我想在python中打印以反斜杠结尾的行的行号，并希望将该行合并到Linenumber，其中包含'\'+ 1



eg



嗨

你好\

早安\

所有

程序员



最后的文字应该是

Hello Good Morning All



我不知道如何根据这个条件进行合并。



我尝试了什么：

I want to print the line number of the line which ends with backslash in python and want to merge the line till Linenumber which contains '\' + 1

e.g

Hi
Hello \
Good Morning \
All
Programmers

The final text should be
Hello Good Morning All

I don't know how to merge based on this condition.

What I have tried:

for Line in fp:
    if (re.search('(\\)', Line)):
         print(LineNumber)
         LineNumber += 1
         continue

但它不起作用。

But it's not working.

推荐答案

尝试：

Try:

'\\

'

然后转到此处： Pythex：Python正则表达式编辑器 [ ^ ] - 它允许你测试和开发python的正则表达式。

Then go here: Pythex: a Python regular expression editor[^] - it lets you test and develop regexes for python.

Quote：

但它不起作用。

帮助我们理解你想要的东西。

Is not help us to understand what you want.

引用：

我想在python中打印以反斜杠结尾的行的行号

I want to print the line number of the line which ends with backslash in python

尝试

Try

for Line in fp:
    if (re.search('(\\)', Line)):
         print(LineNumber)
    LineNumber += 1
    continue

引用：

想要将该行合并到Linenumber，其中包含'\'+ 1

want to merge the line till Linenumber which contains '\' + 1

这是另一个问题。

你需要用字符串代替数组：

This is another problem.
you need to have this in a string instead of an array:

Hi
Hello \
Good Morning \
All
Programmers

类似

Something like

test= "Hi\nHello \\\nGood Morning \\\nAll\nProgrammers"

然后是一个匹配的RegEx

then a RegEx that will match

"Hello \\\nGood Morning \\\nAll"

一旦你在一个字符串中得到匹配，替换\\\ n



只是一些有趣的链接到帮助构建和调试RegEx。

以下是RegEx文档的链接：

perlre - perldoc.perl.org [ ^ ]

以下是帮助构建RegEx并调试它们的工具的链接：

.NET Regex Tester - Regex风暴 [ ^ ]

Expresso正则表达式工具 [ ^ ]

RegExr：Learn，Build，&测试RegEx [ ^ ]

在线正则表达式测试器和调试器：PHP，PCRE，Python，Golang和JavaScript [ ^ ]

这个显示RegEx是一个很好的图表，它非常有助于理解RegEx的作用：

Debuggex：在线可视正则表达式测试器。 JavaScript，Python和PCRE。 [ ^ ]

这个网站也在一个漂亮的图表中显示正则表达式，但无法测试与RegEx匹配的内容：

Regexper [ ^ ]

once you got the match in a single string, replace the "\\\n"

Just a few interesting links to help building and debugging RegEx.
Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx:
Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]
This site also show the Regex in a nice graph but can't test what match the RegEx:
Regexper[^]

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