Pip install Mezzanine 1.2.0 fails

gistfile1.sh

(xxx)% pip install Mezzanine                                  
Downloading/unpacking Mezzanine
  Downloading Mezzanine-1.2.0.tar.gz (4.7Mb): 4.7Mb downloaded
  Running setup.py egg_info for package Mezzanine
    Traceback (most recent call last):
      File "<string>", line 14, in ?
      File "/Users/xxx/.virtualenvs/xxx/build/Mezzanine/setup.py", line 16
        with open(e, "r") as f:
                ^
    SyntaxError: invalid syntax
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 14, in ?

  File "/Users/xxx/.virtualenvs/xxx/build/Mezzanine/setup.py", line 16

    with open(e, "r") as f:

            ^

SyntaxError: invalid syntax

----------------------------------------
Command python setup.py egg_info failed with error code 1 in /Users/xxx/.virtualenvs/xxx/build/Mezzanine
Storing complete log in /Users/xxx/.pip/pip.log