如何从一个字符串中提取两个整数？

import re

def extract_integers(s):
    # 使用正则表达式匹配所有的整数
    numbers = re.findall(r'\d+', s)
    # 将匹配到的字符串转换为整数
    integers = [int(num) for num in numbers]
    return integers

# 示例字符串
s = "abc123def456ghi"
# 提取整数
integers = extract_integers(s)
print(integers)  # 输出: [123, 456]

def extract_two_integers(s):
    numbers = re.findall(r'\d+', s)
    return numbers[:2]  # 只取前两个整数

# 示例字符串
s = "abc123def456ghi789"
# 提取前两个整数
integers = extract_two_integers(s)
print(integers)  # 输出: ['123', '456']