如何根据文件大小将PDF文件移动到文件夹

import os
import shutil

def move_pdf_by_size(folder_path):
    # 创建文件夹
    small_folder = os.path.join(folder_path, "小文件")
    medium_folder = os.path.join(folder_path, "中文件")
    large_folder = os.path.join(folder_path, "大文件")
    os.makedirs(small_folder, exist_ok=True)
    os.makedirs(medium_folder, exist_ok=True)
    os.makedirs(large_folder, exist_ok=True)

    # 遍历文件夹中的PDF文件
    for file_name in os.listdir(folder_path):
        if file_name.endswith(".pdf"):
            file_path = os.path.join(folder_path, file_name)
            file_size = os.path.getsize(file_path)

            # 根据文件大小移动文件
            if file_size < 1024 * 1024:  # 小于1MB
                shutil.move(file_path, os.path.join(small_folder, file_name))
            elif file_size < 10 * 1024 * 1024:  # 大于1MB小于10MB
                shutil.move(file_path, os.path.join(medium_folder, file_name))
            else:  # 大于10MB
                shutil.move(file_path, os.path.join(large_folder, file_name))

# 示例用法
folder_path = "/path/to/pdf/files"
move_pdf_by_size(folder_path)