如何从pdf中提取特定标题下的文本？

import pdfplumber

def extract_text_from_pdf(pdf_path, target_title):
    with pdfplumber.open(pdf_path) as pdf:
        for page in pdf.pages:
            for element in page.extract_words():
                if element['text'] == target_title:
                    # 根据需要提取标题下的文本内容
                    extracted_text = page.extract_text()
                    return extracted_text

# 示例用法
pdf_path = 'path/to/your/pdf/file.pdf'
target_title = '目标标题'
extracted_text = extract_text_from_pdf(pdf_path, target_title)
print(extracted_text)