/usr/local/lib/python2.7/dist-packages/matplotlib/cbook/deprecation.py:107: MatplotlibDeprecationWarning: Passing one of 'on', 'true', 'off', 'false' as a boolean is deprecated; use an actual boolean (True/False) instead. warnings.warn(message, mplDeprecation, stacklevel=1) {"usertime":28.44,"memmax":134416,"memavg":0}