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正则表达式，用于在未注释掉的标签之间查找文本(Regular Expression to find text between tags that are not commented out)

 我有一个简单的场景似乎在困扰我。 我想在两个没有注释掉的标签之间得到文本。 这是一个例子：  
// Example of commented text
// :Start
// <I don't want to get this text>
// :End


:Start
<Here is the text i want>
:End
 
 解：  
 感谢大家的帮助。 超快地收到答案，完全符合我的需要。 我选择了以下正则表达式，因为它最适合我的情况。 特别感谢Tim Pietzcker：  
(?sm)(?<=^:Start\s*)(?:(?!^:End).)*

I have a simple scenario that seems to be stumping me. I want to get the text between two tags which are not commented out. Here is an example: 
// Example of commented text
// :Start
// <I don't want to get this text>
// :End


:Start
<Here is the text i want>
:End
 
Solution: 
Thanks to all for your help. Received the answer super fast and does exactly what I need. I went with the following regular expression because it worked best for my situation. Special thanks to Tim Pietzcker: 
(?sm)(?<=^:Start\s*)(?:(?!^:End).)*

原文：https://stackoverflow.com/questions/12804865

更新时间：2023-10-23 14:10

最满意答案

 你可以检查文件是否已经存在，然后不要调用writeheader()因为你打开带有附加选项的文件。  
 类似的东西：  
import os.path


file_exists = os.path.isfile(filename)

with open (filename, 'a') as csvfile:
    headers = ['TimeStamp', 'light', 'Proximity']
    writer = csv.DictWriter(csvfile, delimiter=',', lineterminator='\n',fieldnames=headers)

    if not file_exists:
        writer.writeheader()  # file doesn't exist yet, write a header

    writer.writerow({'TimeStamp': dic['ts'], 'light': dic['light'], 'Proximity': dic['prox']})

You could check if file is already exists and then don't call writeheader() since you're opening the file with an append option. 
Something like that: 
import os.path


file_exists = os.path.isfile(filename)

with open (filename, 'a') as csvfile:
    headers = ['TimeStamp', 'light', 'Proximity']
    writer = csv.DictWriter(csvfile, delimiter=',', lineterminator='\n',fieldnames=headers)

    if not file_exists:
        writer.writeheader()  # file doesn't exist yet, write a header

    writer.writerow({'TimeStamp': dic['ts'], 'light': dic['light'], 'Proximity': dic['prox']})

正则表达式，用于在未注释掉的标签之间查找文本(Regular Expression to find text between tags that are not commented out)

最满意答案

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