如何将python中的2位数字与字符串匹配？

import re

def match_two_digit_number(string):
    pattern = r"\b\d{2}\b"  # 匹配2位数字的正则表达式
    matches = re.findall(pattern, string)
    return matches

# 测试示例
text = "abc 12 def 34 ghi 56 jkl 78 mno"
result = match_two_digit_number(text)
print(result)  # 输出 ['12', '34', '56', '78']