使用python从多个文件夹读取和提取多个PDF

import os
from PyPDF2 import PdfFileReader

def extract_pdf_files(folder_path):
    pdf_files = []
    for root, dirs, files in os.walk(folder_path):
        for file in files:
            if file.endswith(".pdf"):
                pdf_files.append(os.path.join(root, file))
    
    extracted_text = []
    for pdf_file in pdf_files:
        with open(pdf_file, "rb") as file:
            pdf = PdfFileReader(file)
            num_pages = pdf.getNumPages()
            for page_num in range(num_pages):
                page = pdf.getPage(page_num)
                extracted_text.append(page.extractText())
    
    return extracted_text

folder_path = "path/to/folder"
extracted_text = extract_pdf_files(folder_path)