错误:无法为使用PEP 517且无法直接安装的密码术制造​​轮子 [英] ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

问题描述

当pip为加密软件包构建轮子时，我得到了一个错误.

I get an error when pip builds wheels for the cryptography package.

错误:

LINK : fatal error LNK1181: cannot open input file 'libssl.lib'
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x86\\link.exe' failed with exit status 1181
  ----------------------------------------
  ERROR: Failed building wheel for cryptography
  Running setup.py clean for cryptography
Failed to build cryptography
ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

我已经安装了OpenSSL并按照这篇文章中的建议设置环境变量，但问题仍然存在.我的设置详细信息:

I have already installed OpenSSL and set the environment variables as suggested in this post yet the problem persists. My setup details:

• 系统-Windows 10
• Python-3.8
• 点-19.3.1

推荐答案

在requirements.txt中将密码设置为2.8版解决了该问题.

Setting cryptography to version 2.8 in requirements.txt fixed the issue.

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