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第一、单个PDF文件命名格式：

提取PDF文档中的合同号和姓名并按“合同号_姓名”格式重命名文件

import pdfplumber
import re
import osdef extract_contract_info(pdf_path):with pdfplumber.open(pdf_path) as pdf:for page in pdf.pages:text = page.extract_text()# 匹配合同编号（只取前12位）contract_match = re.search(r'合同编号[:：]\s*([A-Za-z0-9]{12})', text)# 匹配借款人（直到换行或括号，并去除所有空格）borrower_match = re.search(r'借款人[:：]\s*([^\n（()]+)', text)if contract_match and borrower_match:contract_number = contract_match.group(1)borrower_name = borrower_match.group(1).replace(" ", "")  # 删除所有空格return contract_number, borrower_namereturn None, Nonedef rename_pdf_file(pdf_path):contract_number, borrower_name = extract_contract_info(pdf_path)if contract_number and borrower_name:dir_name = os.path.dirname(pdf_path)new_filename = f"{contract_number}_{borrower_name}.pdf"new_filepath = os.path.join(dir_name, new_filename)# 避免文件名冲突（自动添加序号）counter = 1while os.path.exists(new_filepath):new_filename = f"{contract_number}_{borrower_name}_{counter}.pdf"new_filepath = os.path.join(dir_name, new_filename)counter += 1os.rename(pdf_path, new_filepath)print(f"文件已重命名为: {new_filename}")else:print("未能提取合同信息，无法重命名")# 使用示例
pdf_path = r'D:\xmfile\案件杂货表\部门\鲍晓文\《个人借款额度合同》XZ_20201224.pdf'
rename_pdf_file(pdf_path)

第二、批量实现PDF文件命名格式：

提取PDF文档中的合同号和姓名并按“合同号_姓名”格式重命名文件

import pdfplumber
import re
import os
from typing import Tuple, Optionaldef validate_pdf(filepath: str) -> bool:"""验证文件是否为有效的PDF"""try:with pdfplumber.open(filepath) as pdf:if len(pdf.pages) == 0:return Falsereturn Trueexcept:return Falsedef clean_borrower_name(name: str) -> str:"""清洗借款人姓名"""# 去除前后空格、特殊字符和标点name = re.sub(r'[^\w\u4e00-\u9fa5]', '', name.strip())# 去除身份证号、电话等可能跟随的信息name = re.sub(r'[\dXx]{15,}', '', name)return namedef extract_contract_info(pdf_path: str) -> Tuple[Optional[str], Optional[str]]:"""提取合同编号和借款人信息"""if not validate_pdf(pdf_path):return None, Nonetry:with pdfplumber.open(pdf_path) as pdf:full_text = "\n".join([page.extract_text() or "" for page in pdf.pages])# 更精确的合同编号匹配（考虑多种格式）contract_match = re.search(r'(合同编号|合同号|编号)[:：]?\s*([A-Za-z0-9]{10,15})',full_text,re.IGNORECASE)# 更精确的借款人匹配（考虑多种表述方式）borrower_match = re.search(r'(借款人|借款方|甲方)[:：]?\s*([^\n（）()]{2,20}?)(?=[\n（）()]|身份证|联系方式|$)',full_text,re.IGNORECASE)if contract_match and borrower_match:contract_number = contract_match.group(2)[:12]  # 仍只取前12位raw_borrower_name = borrower_match.group(2)borrower_name = clean_borrower_name(raw_borrower_name)if len(borrower_name) >= 2:  # 姓名至少2个字符return contract_number, borrower_nameexcept Exception as e:print(f"⚠️ 处理 {os.path.basename(pdf_path)} 时发生错误: {str(e)}")return None, Nonedef rename_pdf_file(pdf_path: str) -> None:"""重命名PDF文件"""original_name = os.path.basename(pdf_path)contract_number, borrower_name = extract_contract_info(pdf_path)if contract_number and borrower_name:dir_name = os.path.dirname(pdf_path)base_name = f"{contract_number}_{borrower_name}"extension = ".pdf"# 处理文件名冲突counter = 0while True:new_name = f"{base_name}{f'_{counter}' if counter else ''}{extension}"new_path = os.path.join(dir_name, new_name)if not os.path.exists(new_path):try:os.rename(pdf_path, new_path)print(f"✅ 成功: {original_name} → {new_name}")breakexcept Exception as e:print(f"❌ 重命名失败: {original_name} → {new_name} | 错误: {str(e)}")breakcounter += 1else:print(f"⚠️ 跳过: {original_name} (未提取到有效信息)")def batch_rename_pdfs_in_subfolders(root_dir: str) -> None:"""批量处理子文件夹中的PDF文件"""if not os.path.isdir(root_dir):print(f"❌ 错误: 目录不存在 {root_dir}")returnprocessed_files = 0skipped_files = 0error_files = 0for person_dir in os.listdir(root_dir):person_dir_path = os.path.join(root_dir, person_dir)if not os.path.isdir(person_dir_path):continueprint(f"\n🔍 正在处理: {person_dir}")for filename in os.listdir(person_dir_path):if filename.lower().endswith('.pdf'):pdf_path = os.path.join(person_dir_path, filename)try:rename_pdf_file(pdf_path)processed_files += 1except Exception as e:print(f"❌ 处理 {filename} 时出错: {str(e)}")error_files += 1else:skipped_files += 1print(f"\n📊 处理完成: 共处理 {processed_files} 个文件, 跳过 {skipped_files} 个, 错误 {error_files} 个")if __name__ == "__main__":# 使用示例department_dir = r'D:\xmfile\案件杂货表\部门'# 输入验证while not os.path.exists(department_dir):print(f"目录不存在: {department_dir}")department_dir = input("请输入正确的目录路径: ")batch_rename_pdfs_in_subfolders(department_dir)