Aws-cli: 无法在 Mac 上安装

你好，

我花了很多时间为 mac 安装 awscli 并且失败了。 我该怎么做呢？
这是我尝试运行它时遇到的错误。

huilgolr$ aws
Traceback (most recent call last):
  File "/usr/local/bin/aws", line 27, in <module>
    sys.exit(main())
  File "/usr/local/bin/aws", line 23, in main
    return awscli.clidriver.main()
  File "/usr/local/aws/lib/python2.7/site-packages/awscli/clidriver.py", line 58, in main
    driver = create_clidriver()
  File "/usr/local/aws/lib/python2.7/site-packages/awscli/clidriver.py", line 69, in create_clidriver
    event_hooks=emitter)
  File "/usr/local/aws/lib/python2.7/site-packages/awscli/plugin.py", line 44, in load_plugins
    modules = _import_plugins(plugin_mapping)
  File "/usr/local/aws/lib/python2.7/site-packages/awscli/plugin.py", line 58, in _import_plugins
    plugins.append(__import__(path))
ImportError: No module named botocore_amazon