Regex 降价不适用于其他空间？

在尝试将

md

转换为

html

文件时，我使用此正则表达式将所有匹配代码的结尾替换为

\n

到

\n\t

。问题在于使用

search（）

时匹配，而不是使用

sub（）

时匹配。我需要帮助

import markdown2
import re

code_text = """* But why did the `is` operator evaluated to `False`? Let's see with this snippet.
  ```py
  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
  ```

  **Output:**"""

print("PROBLEM :: \n", markdown2.markdown(code_text))

pattern = re.compile(r"```py(?P<code>.*?)```", re.DOTALL)

code_only = pattern.search(code_text).group("code")

code_only = code_only.replace("\n", "\n\t")

print("SOLUTION 1:: \n", markdown2.markdown(code_only))

###################################################
# Replacing all code occurrences in the given string

code_only = pattern.sub(lambda m: (m.group("code")).replace("\n", "\n\t"), code_text)

print("SOLUTION 2:: \n", markdown2.markdown(code_only))

输出：

PROBLEM :: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.
<code>py
class WTF(object):
def __init__(self): print("I ")
def __del__(self): print("D ")
</code></p>

<p><strong>Output:</strong></p></li>
</ul>

SOLUTION 1:: 
 <pre><code>  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
</code></pre>

SOLUTION 2:: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.</p>

<p>class WTF(object):
    def <strong>init</strong>(self): print("I ")
    def <strong>del</strong>(self): print("D ")</p>

<p><strong>Output:</strong></p></li>
</ul>

解决方案2：

• 但是为什么将

  操作符计算为
  False
  ？让我们看看这个片段
  
  类WTF（对象）：
  definit（自身）：打印（“I”）
  defdel（自身）：打印（“D”）
  
  输出：
  

PROBLEM :: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.
<code>py
class WTF(object):
def __init__(self): print("I ")
def __del__(self): print("D ")
</code></p>

<p><strong>Output:</strong></p></li>
</ul>

SOLUTION 1:: 
 <pre><code>  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
</code></pre>

SOLUTION 2:: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.</p>

<p>class WTF(object):
    def <strong>init</strong>(self): print("I ")
    def <strong>del</strong>(self): print("D ")</p>

<p><strong>Output:</strong></p></li>
</ul>

尝试将

code\u文本

更改为

PROBLEM :: 

 <p>```py</p>

<blockquote>
  <blockquote>
    <blockquote>
      <p>a = "some<em>string"
      id(a)
      140420665652016
      id("some" + "</em>" + "string") # Notice that both the ids are same.
      140420665652016
      ```</p>

      <h3>This is a heading</h3>
    </blockquote>
  </blockquote>
</blockquote>

<p><code>py
print("Hello World")
</code></p>

SOLUTION 1:: 
 <pre><code>&gt;&gt;&gt; a = "some_string"
&gt;&gt;&gt; id(a)
140420665652016
&gt;&gt;&gt; id("some" + "_" + "string") # Notice that both the ids are same.
140420665652016
</code></pre>

SOLUTION 2:: 
 <pre><code>&gt;&gt;&gt; a = "some_string"
&gt;&gt;&gt; id(a)
140420665652016
&gt;&gt;&gt; id("some" + "_" + "string") # Notice that both the ids are same.
140420665652016
</code></pre>

<h3>This is a heading</h3>

<pre><code>print("Hello World")
</code></pre>

它工作得很好

输出：

PROBLEM :: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.
<code>py
class WTF(object):
def __init__(self): print("I ")
def __del__(self): print("D ")
</code></p>

<p><strong>Output:</strong></p></li>
</ul>

SOLUTION 1:: 
 <pre><code>  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
</code></pre>

SOLUTION 2:: 
 <ul>
<li>
<p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.</p>
<p>class WTF(object):
    def <strong>init</strong>(self): print("I ")
    def <strong>del</strong>(self): print("D ")</p>
</li>
</ul>
<p><strong>Output:</strong></p>

解决方案2： 这是一个标题 编辑1

尝试使用Pypi标记

输出：

PROBLEM :: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.
<code>py
class WTF(object):
def __init__(self): print("I ")
def __del__(self): print("D ")
</code></p>

<p><strong>Output:</strong></p></li>
</ul>

SOLUTION 1:: 
 <pre><code>  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
</code></pre>

SOLUTION 2:: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.</p>

<p>class WTF(object):
    def <strong>init</strong>(self): print("I ")
    def <strong>del</strong>(self): print("D ")</p>

<p><strong>Output:</strong></p></li>
</ul>

解决方案2：

• 但是为什么将

  操作符计算为
  False
  ？让我们看看这个片段
  
  类WTF（对象）：
  definit（自身）：打印（“I”）
  defdel（自身）：打印（“D”）
  
  

输出：

PROBLEM :: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.
<code>py
class WTF(object):
def __init__(self): print("I ")
def __del__(self): print("D ")
</code></p>

<p><strong>Output:</strong></p></li>
</ul>

SOLUTION 1:: 
 <pre><code>  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
</code></pre>

SOLUTION 2:: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.</p>

<p>class WTF(object):
    def <strong>init</strong>(self): print("I ")
    def <strong>del</strong>(self): print("D ")</p>

<p><strong>Output:</strong></p></li>
</ul>

编辑2:

PROBLEM :: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.
<code>py
class WTF(object):
def __init__(self): print("I ")
def __del__(self): print("D ")
</code></p>

<p><strong>Output:</strong></p></li>
</ul>

SOLUTION 1:: 
 <pre><code>  class WTF(object):
    def __init__(self): print("I ")
    def __del__(self): print("D ")
</code></pre>

SOLUTION 2:: 
 <ul>
<li><p>But why did the <code>is</code> operator evaluated to <code>False</code>? Let's see with this snippet.</p>

<p>class WTF(object):
    def <strong>init</strong>(self): print("I ")
    def <strong>del</strong>(self): print("D ")</p>

<p><strong>Output:</strong></p></li>
</ul>

---

sub（）

工作正常。我刚刚确认了它，但是由于代码在每行末尾都有

\n\t

，所以在运行它之后，它变成了

\n\t\t

，现在

标记（）

不起作用。

您可以使用它（Python标记可以输出带有HTML或XHTML样式标记的文档）。尝试了，没有起作用。

sub（）

有效。很抱歉。如果有额外的空间，mardown不工作。