How to install pip on mac?

http://*.com/questions/12092306/how-to-install-scipy-with-pip-on-mac-mountain-lion-os-x-v10-8

1. Scipy superpack: a bunch of precompiled binaries

2. Enthought Canopy:

3. Anaconda:

4. MacPorts:

5. Homebrew

Homebrew: another popular package manager for OS X.

Questions

1. 运行 "$brew update"命令有如下输出:

"Warning: Could not create link for homebrew/dupes/fetchmail, as it

conflicts with Homebrew/homebrew/fetchmail. You will need to use the

fully-qualified name when referring this formula, e.g.

brew install homebrew/dupes/fetchmail

Updated Homebrew from acff3655 to d353d8c5."