import pikepdf
import os
def unlock_pdf_with_pikepdf(input_path, output_path):
    """使用 pikepdf 解除 PDF 的权限限制"""
    try:
        pdf = pikepdf.open(input_path)
        pdf.save(output_path)
        print(f"成功！已将解除限制的PDF保存至: {output_path}")
    except Exception as e:
        print(f"处理失败: {e}")