Python正则表达式捕获重复模式组

Question

我有一个日志文件，我正在试图分析。日志文件示例如下：

Oct 23 13:03:03.714012 prod1_xyz(RSVV)[201]: #msgtype=EVENT #server=Web/Dev@server1web #func=LKZ_WriteData ( line 2992 ) #rc=0 #msgid=XYZ0064 #reqid=0 #msg=Web Activity end (section 200, # SysD 1, Files 222, Bytes 343422089928, Errors 0, Aborted Files 0, Busy Files 0)

我想取出所有以散列开头的文本，并且有一个键和值。例如，#msgtype=EVENT。任何只有散列且没有“=”符号的文本都将被视为值

所以在上面的日志条目中，我想要一个如下所示的列表

#msgtype=EVENT
#server=Web/Dev@server1web
#func=LKZ_WriteData ( line 2992 ) 
#rc=0
#msgid=XYZ0064 
#reqid=0
#msg=Web Activity end (section 200, # SysD 1, Files 222, Bytes 343422089928, Errors 0, Aborted Files 0, Busy Files 0) (Notice the hash present in the middle of the text)

我已经尝试了Python regex findall选项，但无法捕获所有数据

例如：

str='Oct 23 13:03:03.714012 prod1_xyz(RSVV)[201]: #msgtype=EVENT #server=Web/Dev@server1web #func=LKZ_WriteData ( line 2992 ) #rc=0 #msgid=XYZ0064 #reqid=0 #msg=Web Activity end (section 200, # SysD 1, Files 222, Bytes 343422089928, Errors 0, Aborted Files 0, Busy Files 0)'

z = re.findall("(#.+?=.+?)(:?#|$)",str)
print(z)

输出：

[('#msgtype=EVENT ', '#'), ('#func=LKZ_WriteData ( line 2992 ) ', '#'), ('#msgid=XYZ0064 ', '#'), ('#msg=Web Activity end (section 200, ', '#')]

Answer 1

(:?#|$)是一个捕获组，它匹配一个可选的:，然后是#，或者字符串的结尾。因为re.findall返回所有捕获的子字符串，所以结果是一个元组列表

你需要

re.findall(r'#[^\s=]+=.*?(?=\s*#[^\s=]+=|$)', text)

参见regex demo

正则表达式详细信息

• #[^\s=]+-#然后是除空格和=之外的任何1+字符
• =-a=字符
• .*?-除换行符以外的任何0+字符，尽可能少
• (?=\s*#[^\s=]+=|$)-最多（不包括）0+个空格，#，1+个除空格和=以外的字符，然后=或字符串结尾

Answer 2

import re

s = "Oct 23 13:03:03.714012 prod1_xyz(RSVV)[201]: #msgtype=EVENT #server=Web/Dev@server1web #func=LKZ_WriteData ( line 2992 ) #rc=0 #msgid=XYZ0064 #reqid=0 #msg=Web Activity end (section 200, # SysD 1, Files 222, Bytes 343422089928, Errors 0, Aborted Files 0, Busy Files 0)"

a = re.findall('#(?=[a-zA-Z]+=).+?=.*?(?= #[a-zA-Z]+=|$)', s)

result = [item.split('=') for item in a]

print(result)

提供：

[['#msgtype', 'EVENT'], ['#server', 'Web/Dev@server1web'], ['#func', 'LKZ_WriteData ( line 2992 )'], ['#rc', '0'], ['#msgid', 'XYZ0064'], ['#reqid', '0'], ['#msg', 'Web Activity end (section 200, # SysD 1, Files 222, Bytes 343422089928, Errors 0, Aborted Files 0, Busy Files 0)']]