MacBook Yosemite系统下AWS CLI安装失败求助

Let's fix this installation issue step by step. The core problem here is a compatibility conflict between the outdated awscli-bundle script and your pip 19.1.1 version—pip changed how its main function is structured after version 10, which breaks the old bundle script's logic.

第一步：清理之前的安装残留 #

First, let's remove all leftover files from your previous attempts to avoid conflicts:

• Delete the AWS installation directory created by the bundle script:

  sudo rm -rf /usr/local/aws
  

• Delete the downloaded awscli-bundle folder:

  rm -rf ~/awscli-bundle
  

• Check for any existing aws command and remove it if present:

  which aws && sudo rm $(which aws)
  

方法一：用pip3直接安装（推荐） #

AWS now recommends using pip directly instead of the legacy bundle script, which will avoid the pip compatibility issue. Since you already have Python 3.7 and pip3 set up:

1. Install AWS CLI to your user directory (no sudo needed, avoids permission problems):

   pip3 install awscli --user
   

2. Add your user-specific Python bin directory to your PATH so the aws command is accessible globally. Edit your ~/.bash_profile:

   echo 'export PATH="$HOME/Library/Python/3.7/bin:$PATH"' >> ~/.bash_profile
   

3. Refresh your shell environment to apply the PATH change:

   source ~/.bash_profile
   

4. Verify the installation works:

   aws --version
   

方法二：用虚拟环境隔离安装（如果方法一仍有问题） #

If you run into permission or dependency conflicts with your system Python, use a virtual environment to isolate the AWS CLI installation:

1. Install virtualenv to your user directory:

   pip3 install virtualenv --user
   

2. Create a dedicated virtual environment for AWS CLI:

   virtualenv -p python3.7 ~/aws-venv
   

3. Activate the virtual environment:

   source ~/aws-venv/bin/activate
   

4. Install AWS CLI inside the virtual environment:

   pip install awscli
   

5. Verify the installation:

   aws --version
   

6. To use the aws command globally without activating the virtual environment, create a symbolic link:

   sudo ln -s ~/aws-venv/bin/aws /usr/local/bin/aws
   

7. You can exit the virtual environment anytime with:

   deactivate
   

原报错原因分析 #

The error ImportError: cannot import name 'main' from 'pip' happens because:

• The awscli-bundle script uses an older version of virtualenv that expects the old pip main import pattern.
• Your system's pip 19.1.1 uses a new structure where from pip import main is no longer valid (this changed in pip 10+).
• The virtualenv created by the bundle script was incorrectly pulling in your user-level pip files instead of using its own isolated pip version.

内容的提问来源于stack exchange，提问作者umemon