import matplotlib
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/__init__.py", line 1131, in <module>
    rcParams = rc_params()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/__init__.py", line 965, in rc_params
    fname = matplotlib_fname()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/__init__.py", line 794, in matplotlib_fname
    configdir = _get_configdir()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/__init__.py", line 649, in _get_configdir
    return _get_config_or_cache_dir(_get_xdg_config_dir())
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/__init__.py", line 626, in _get_config_or_cache_dir
    return _create_tmp_config_dir()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/__init__.py", line 550, in _create_tmp_config_dir
    tempdir = tempfile.gettempdir()
  File "/usr/lib/python2.7/tempfile.py", line 269, in gettempdir
    tempdir = _get_default_tempdir()
  File "/usr/lib/python2.7/tempfile.py", line 212, in _get_default_tempdir
    ("No usable temporary directory found in %s" % dirlist))
IOError: [Errno 2] No usable temporary directory found in ['/tmp', '/var/tmp', '/usr/tmp', '/root']