检查pip最新版本报错，安装docker==2.7.0失败求助

I recognize the two errors you're hitting:

Could not find a version that satisfies the requirement docker2.7.0 (from versions: ) No matching distribution found for docker2.7.0

And when adding -vvv:

HTTPError: 403 Client Error: TLSv1.2+ is required for url: https://pypi.python.org/pypi/pip/json

These are caused by two linked issues: outdated pip lacking modern TLS support, and Python 2.7's end-of-life status. Here's how to fix this:

Root Causes #

• Outdated pip: Your pip 9.0.1 doesn't enforce TLSv1.2 by default, but PyPI now requires TLSv1.2+ for all connections—this is the source of the 403 error.
• Python 2.7 EOL: Python 2.7 reached end-of-life in 2020, so many older package versions (including docker==2.7.0) may have been removed from PyPI, or your old pip can't access them due to security restrictions.

Step-by-Step Solutions #

1. Upgrade pip to the Last Python 2.7-Compatible Version #

Since the standard pip install --upgrade pip will fail due to TLS blocks, use the official bootstrap script:

• Download the Python 2.7-specific get-pip.py script:

  curl https://bootstrap.pypa.io/pip/2.7/get-pip.py -o get-pip.py
  

• Run it with your Python 2.7 installation:

  python get-pip.py
  

This installs pip 20.3.4, the final version supporting Python 2.7 with proper TLSv1.2 support.

2. Install docker==2.7.0 #

Once pip is updated, try installing the package again:

pip install docker==2.7.0

If you still face issues, add trusted host flags to bypass any remaining TLS-related restrictions:

pip install docker==2.7.0 --trusted-host pypi.org --trusted-host files.pythonhosted.org

3. Long-Term Fix (Highly Recommended) #

Python 2.7 is no longer receiving security updates or package maintenance. If possible, migrate your project to Python 3.x. Most modern packages (including newer docker versions) are only supported on Python 3, and this will prevent similar compatibility issues in the future.

内容的提问来源于stack exchange，提问作者Dmitriy Demidov