我也有同样的问题，这是因为我改变了环境的文件夹。 我只是移除了env，重新安装了所有东西。

我得到了同样的错误:

WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pb-tool/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pb-tool/
ERROR: Operation cancelled by user
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping

在《Anaconda》中，我使用了以下命令:

conda install anaconda-navigator

本文中提到:pip配置了需要TLS/SSL的位置，但是Python中的SSL模块不可用

在Windows 10 SQL Server 19中，解决方案是已知的。

复制以下文件:

libssl-1_1-x64.dll libcrypto-1_1-x64.dll

从文件夹中

C:\Program Files\Microsoft SQL Server\MSSSQL15。MSSQLSERVER \ PYTHON_SERVICES \图书馆\ bin

到文件夹

C:\Program Files\Microsoft SQL Server\MSSSQL15。MSSQLSERVER \ PYTHON_SERVICES \ dll

然后打开一个新的DOS命令shell提示符。

从https://learn.microsoft.com/en-us/sql/machine-learning/troubleshooting/known-issues-for-sql-server-machine-learning-services?view=sql-server-ver15 # 7 -不-安装- python包-使用- pip -后-安装- sql - server - windows - 2019

你可以尝试brew链接，它会告诉你正确的说明:

$ brew link openssl --force
Warning: Refusing to link macOS provided/shadowed software: openssl@1.1
If you need to have openssl@1.1 first in your PATH run:
  echo 'export PATH="/usr/local/opt/openssl@1.1/bin:$PATH"' >> ~/.zshrc

For compilers to find openssl@1.1 you may need to set:
  export LDFLAGS="-L/usr/local/opt/openssl@1.1/lib"
  export CPPFLAGS="-I/usr/local/opt/openssl@1.1/include"

For pkg-config to find openssl@1.1 you may need to set:
  export PKG_CONFIG_PATH="/usr/local/opt/openssl@1.1/lib/pkgconfig"

我使用的是Windows 10，安装了Miniconda 3和Python 3.7。

我通过以下https://github.com/conda/conda/issues/8273解决了这个错误

具体来说，我将以下文件从C:\Users\MyUser\Miniconda3\ library \bin复制到C:\Users\MyUser\Miniconda3\ dll:

libcrypto-1_1-x64.dll libcrypto-1_1-x64.pdb libssl-1_1-x64.dll libssl-1_1-x64.pdb

正如Tokci所说，它也适用于Windows 7。

用鼠标移动到Windows图标(左下)，并开始输入“Anaconda”。应该会显示一些匹配的条目。选择“Anaconda Prompt”。一个名为“蟒蛇提示”的新命令窗口将打开。

然后pip开始工作。

以下也有助于导入xgboost: https://www.youtube.com/watch?v=05djBSOs1FA