Python函数在两个标记之间查找字符串

text = "这是一个测试字符串"
start_marker = "一"
end_marker = "串"

start_index = text.find(start_marker)
end_index = text.find(end_marker)

if start_index != -1 and end_index != -1:
    result = text[start_index:end_index + len(end_marker)]
    print(result)
else:
    print("标记未找到")

import re

text = "这是一个测试字符串"
start_marker = "一"
end_marker = "串"

pattern = re.compile(f"{start_marker}(.*?){end_marker}")
match = pattern.search(text)

if match:
    result = match.group(1)
    print(result)
else:
    print("标记未找到")