» python setup.py build_ext      fonnescj@Cepeda
running build_ext
Traceback (most recent call last):
  File "setup.py", line 15, in <module>
    requires = ['numpy', 'scipy'],
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/Library/Python/2.7/site-packages/Cython/Distutils/build_ext.py", line 159, in run
    if self.cython_gdb or [1 for ext in self.extensions
TypeError: 'NoneType' object is not iterable