我正在尝试安装最新版本的六个 python 包,但我有以下问题。mac OSX 10.10.2中无法摆脱6个1.4.1
sudo pip install six --upgrade
Requirement already up-to-date: six in /Library/Python/2.7/site-packages
Cleaning up...
pip search six
six - Python 2 and 3 compatibility utilities
INSTALLED: 1.9.0 (latest)
python -c "import six; print six.version"
1.4.1
which -a python
/usr/bin/python
which -a pip
/usr/local/bin/pip
这里有什么问题?不能升级六!