正则表达式：搜索包含4的字符串-

Question

I am trying to go through a log file line by line and find instances of strings like 5x76fd63-df62-4dae-a92b-10b8f38fb275 ie having 4 dashes.

I need all the lines but want to use matched strings as key/ids.

Answer 1

I need all the lines but want to use matched strings as key/ids.

Since you want keys, a dictionary is appropriate.

import re
keyline = {}                                    # start with empty dictionary
for line in file:
    m = re.search("\w+-\w+-\w+-\w+-\w+", line)  # search ID with four dashes
    if m:
        keyline[m.group()] = line               # store the line with its ID

print(keyline)