Python如何获取段落中特定字符串后的整数？

paragraph = "This is a paragraph. It contains some numbers like 123 and 456."
sentences = paragraph.split('. ')

target_string = "numbers like"
for sentence in sentences:
    if target_string in sentence:
        # 找到了特定字符串
        # 在特定字符串后面查找整数
        index = sentence.find(target_string)
        numbers = sentence[index + len(target_string):]
        break

import re

# 使用正则表达式提取整数
numbers = re.findall(r'\d+', numbers)
# 或者使用字符串的isnumeric()方法提取整数
numbers = [int(num) for num in numbers if num.isnumeric()]

print(numbers)