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2023-06-21 05:00:20

pip install failed with "connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)"

我对Python非常陌生，并试图在Windows 7上安装链接检查器。一些注意事项:

pip install is failing no matter the package. For example, > pip install scrapy also results in the SSL error. Vanilla install of Python 3.4.1 included pip 1.5.6. The first thing I tried to do was install linkchecker. Python 2.7 was already installed, it came with ArcGIS. python and pip were not available from the command line until I installed 3.4.1. > pip search linkchecker works. Perhaps that is because pip search does not verify the site's SSL certificate. I am in a company network but we do not go through a proxy to reach the Internet. Each company computer (including mine) has a Trusted Root Certificate Authority that is used for various reasons including enabling monitoring TLS traffic to https://google.com. Not sure if that has anything to do with it.

下面是运行pip install linkchecker后我的pip.log的内容:

Downloading/unpacking linkchecker
  Getting page https://pypi.python.org/simple/linkchecker/
  Could not fetch URL https://pypi.python.org/simple/linkchecker/: connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)
  Will skip URL https://pypi.python.org/simple/linkchecker/ when looking for download links for linkchecker
  Getting page https://pypi.python.org/simple/
  Could not fetch URL https://pypi.python.org/simple/: connection error: HTTPSConnectionPool(host='pypi.python.org', port=443): Max retries exceeded with url: /simple/ (Caused by <class 'http.client.CannotSendRequest'>: Request-sent)
  Will skip URL https://pypi.python.org/simple/ when looking for download links for linkchecker
  Cannot fetch index base URL https://pypi.python.org/simple/
  URLs to search for versions for linkchecker:
  * https://pypi.python.org/simple/linkchecker/
  Getting page https://pypi.python.org/simple/linkchecker/
  Could not fetch URL https://pypi.python.org/simple/linkchecker/: connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)
  Will skip URL https://pypi.python.org/simple/linkchecker/ when looking for download links for linkchecker
  Could not find any downloads that satisfy the requirement linkchecker
Cleaning up...
  Removing temporary dir C:\Users\jcook\AppData\Local\Temp\pip_build_jcook...
No distributions at all found for linkchecker
Exception information:
Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\pip\basecommand.py", line 122, in main
    status = self.run(options, args)
  File "C:\Python34\lib\site-packages\pip\commands\install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "C:\Python34\lib\site-packages\pip\req.py", line 1177, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "C:\Python34\lib\site-packages\pip\index.py", line 277, in find_requirement
    raise DistributionNotFound('No distributions at all found for %s' % req)
pip.exceptions.DistributionNotFound: No distributions at all found for linkchecker

当前回答

我尝试了这个回答博客中提供的大多数解决方案，但是没有一个有效，我在尝试安装python包时遇到了这个ssl证书错误。

我通过以下命令成功执行:

python -m pip install PACKAGENAME --trusted-host=pypi.python.org --trusted-host=pypi.org --trusted-host=files.pythonhosted.org
2020-10-18 23:16:45

其他回答

如果已经编译了Python，则执行以下操作在Python中启用SSL。

wget --no-check-certificate https://www.python.org/ftp/python/3.9.10/Python-3.9.10.tgz
tar -zxf Python-3.9.10.tgz
cd Python-3.9.10
mkdir /home/$USER/tools
export INSTALL_BASE_PATH=/home/$USER/tools

mkdir -p {INSTALL_BASE_PATH}/ssl
vi ./Modules/Setup      # Modify below lines in this file to these

SSL = {INSTALL_BASE_PATH} / SSL _ssl _ssl.c \ -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \ -L$(SSL)/lib -lssl -lcrypto .使用实例

./configure \
    --prefix=${INSTALL_BASE_PATH} \
    --enable-shared \
    --enable-ipv6 \
    LDFLAGS=-Wl,-rpath=${INSTALL_BASE_PATH}/lib,--disable-new-dtags

make
make install
2022-04-04 06:46:42

或者，如果什么都不行(就像我的情况)，你可以恢复到搜索和下载whl文件这里:

https://pypi.org/project/fileDownloader.py/

在通过pip安装它之前，使用下载的文件，不再需要任何证书:

python3.7 -m pip install Myfile.whl
2021-01-26 15:05:06

不要跳过!找到Linux的安全解决方案

所有使用——trusted-host将pypi.org添加到可信站点的解决方案都是不安全的，基本上跳过了https，并没有真正解决问题。 每个使用这种方法的人，请尝试以这种方式更新您的证书，并删除——trusted-host标志:

sudo yum -y update ca-certificates
export PIP_CERT=/etc/ssl/certs/ca-bundle.crt

安全很重要!

2020-10-15 08:51:25

沃斯坦的回答帮助了我。

我在我的电脑上找不到pip.ini文件。接下来的事情也是如此。

进入AppData文件夹。您可以通过打开命令提示符并输入echo % appdata %来获取appdata文件夹

或者在windows资源管理器中输入%AppData%。

在appdata文件夹中创建一个名为pip的文件夹。 在刚才创建的pip文件夹中，创建一个名为pip.ini的简单文本文件 使用您选择的简单编辑器在该文件中执行以下配置设置。

pip.ini文件:

[list]
format=columns

[global]
trusted-host = pypi.python.org pypi.org

现在应该可以开始了。

2018-07-16 06:25:55

您可以通过以下方法解决CERTIFICATE_VERIFY_FAILED问题:

Use HTTP instead of HTTPS (e.g. --index-url=http://pypi.python.org/simple/). Use --cert <trusted.pem> or CA_BUNDLE variable to specify alternative CA bundle. E.g. you can go to failing URL from web-browser and import root certificate into your system. Run python -c "import ssl; print(ssl.get_default_verify_paths())" to check the current one (validate if exists). OpenSSL has a pair of environments (SSL_CERT_DIR, SSL_CERT_FILE) which can be used to specify different certificate databasePEP-476. Use --trusted-host <hostname> to mark the host as trusted. In Python use verify=False for requests.get (see: SSL Cert Verification). Use --proxy <proxy> to avoid certificate checks.

阅读更多:TLS/SSL包装套接字对象-验证证书。

2016-08-24 13:30:40

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