在python字符串中找到日期（yyyy/mm/dd）时添加新行字符

下面是我的python输出字符串，只要字符串中有日期格式，我就需要添加新行字符

样本输入：

“2020/01/08 09:34:18信息：替换文件中的变量：/var/workspace/sample.py 2020/01/08 09:34:18信息：替换文件中的SSM变量：/var/workspace/test.py 2020/01/08 09:34:18信息：替换”

预期的输出字符串：

import re

s= """2020/01/08 09:34:18 INFO: substituting the variables in file: /var/workspace/sample.py 2020/01/08 09:34:18 INFO: substituting SSM variables in file: /var/workspace/test.py 2020/01/08 09:34:18 INFO: substituting"""
print(re.sub(r"(\d\d\d\d\/\d\d\/\d\d)", r"\n\1", s).strip())

2020/01/08 09:34:18 INFO: substituting the variables in file: /var/workspace/sample.py 
2020/01/08 09:34:18 INFO: substituting SSM variables in file: /var/workspace/test.py 
2020/01/08 09:34:18 INFO: substituting

“2020/01/08 09:34:18信息：替换文件中的变量：/var/workspace/sample.py\n2020/01/08 09:34:18信息：替换文件中的SSM变量：/var/workspace/test.py\n2020/01/08 09:34:18信息：替换”

显示：

2020/01/08 09:34:18信息：替换文件：/var/workspace/sample.py中的变量
2020/01/08 09:34:18信息：替换文件：/var/workspace/test.py中的SSM变量
2020/01/08 09:34:18信息：替换

使用正则表达式-->

re.sub（r“（\d\d\d\d\/\d\d\/\d\d）”，r“\n\1”，s）

Ex:

import re

s= """2020/01/08 09:34:18 INFO: substituting the variables in file: /var/workspace/sample.py 2020/01/08 09:34:18 INFO: substituting SSM variables in file: /var/workspace/test.py 2020/01/08 09:34:18 INFO: substituting"""
print(re.sub(r"(\d\d\d\d\/\d\d\/\d\d)", r"\n\1", s).strip())

2020/01/08 09:34:18 INFO: substituting the variables in file: /var/workspace/sample.py 
2020/01/08 09:34:18 INFO: substituting SSM variables in file: /var/workspace/test.py 
2020/01/08 09:34:18 INFO: substituting

输出：

import re

s= """2020/01/08 09:34:18 INFO: substituting the variables in file: /var/workspace/sample.py 2020/01/08 09:34:18 INFO: substituting SSM variables in file: /var/workspace/test.py 2020/01/08 09:34:18 INFO: substituting"""
print(re.sub(r"(\d\d\d\d\/\d\d\/\d\d)", r"\n\1", s).strip())

2020/01/08 09:34:18 INFO: substituting the variables in file: /var/workspace/sample.py 
2020/01/08 09:34:18 INFO: substituting SSM variables in file: /var/workspace/test.py 
2020/01/08 09:34:18 INFO: substituting

---

问题是什么？我想在一个工具中传递这个输出，所以我必须添加一个新行字符，然后它才会在UIU中逐行显示输出。您可以使用

{n}

避免重复

\d

：

re.sub（r”（\d{4}\/\d{2}\/\d{2}）”，r“\n\1”，“2020/01/08”）