检查PDF文件是否有效(Python)

pip install pypdf2

import PyPDF2

def is_pdf_valid(file_path):
    try:
        with open(file_path, 'rb') as f:
            pdf_reader = PyPDF2.PdfFileReader(f)
            if pdf_reader.isEncrypted:
                return False
            else:
                return True
    except Exception as e:
        return False

file_path = 'path/to/your/pdf/file.pdf'
if is_pdf_valid(file_path):
    print('PDF文件有效')
else:
    print('PDF文件无效')