Python 加密PDF赢得'；无法写入磁盘

我有一些加密pdf的代码，出于某种原因，一旦我加密pdf，书写就会挂起。如果我把

pdf\u writer.encrypt（password）

注释掉，就没有问题了，而且写得很好。我尝试过以最高权限运行脚本并修改文件夹选项，但可能缺少一些简单的东西

with open(filename, 'rb') as pdf_file:
    pdf_reader = PyPDF2.PdfFileReader(pdf_file)
    pdf_writer = PyPDF2.PdfFileWriter()

    for page_number in range(pdf_reader.numPages):
        pdf_writer.addPage(pdf_reader.getPage(page_number))

    pdf_writer.encrypt(password)
    filename_encrypted = filename.parents[0] / f "{filename.stem}_encrypted.pdf"

    with open(filename_encrypted, 'wb') as pdf_file_encrypted:
        pdf_writer.write(pdf_file_encrypted)

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任何帮助都将不胜感激

我不明白为什么PyPDF2不能正常工作，所以我尝试了另一个名为pikepdf的模块，结果一切正常。不管怎么说，这似乎是一个比PyPDF2好得多的模块

import pikepdf


filename = pathlib.Path(r"path\to\pdf\test.pdf")
password = 'password'

with Pdf.open(filename) as pdf:
    filename_encrypted = filename.parents[0] / f"{filename.stem}_encrypted.pdf"
    pdf.save(filename_encrypted, encryption=Encryption(user=password, owner=password))

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我不明白为什么PyPDF2不能正常工作，所以我尝试了另一个名为pikepdf的模块，结果一切正常。不管怎么说，这似乎是一个比PyPDF2好得多的模块

import pikepdf


filename = pathlib.Path(r"path\to\pdf\test.pdf")
password = 'password'

with Pdf.open(filename) as pdf:
    filename_encrypted = filename.parents[0] / f"{filename.stem}_encrypted.pdf"
    pdf.save(filename_encrypted, encryption=Encryption(user=password, owner=password))