In [1]: plt.plot(np.arange(10))
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-1-a81699eb47e8> in <module>()
----> 1 plt.plot(np.arange(10))

/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.pyc in plot(*args, **kwargs)
   3227 @_autogen_docstring(Axes.plot)
   3228 def plot(*args, **kwargs):
-> 3229     ax = gca()
   3230     # Deprecated: allow callers to override the hold state
   3231     # by passing hold=True|False

/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.pyc in gca(**kwargs)
    957     matplotlib.figure.Figure.gca : The figure's gca method.
    958     """
--> 959     return gcf().gca(**kwargs)
    960
    961 # More ways of creating axes:

/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.pyc in gcf()
    586         return figManager.canvas.figure
    587     else:
--> 588         return figure()
    589
    590

/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.pyc in figure(num, figsize, dpi, facecolor, edgecolor, frameon, FigureClass, clear, **kwargs)
    554         # FigureManager base class.
    555         if matplotlib.is_interactive():
--> 556             draw_if_interactive()
    557
    558         if _INSTALL_FIG_OBSERVER:

/usr/local/lib/python2.7/site-packages/matplotlib/backend_bases.pyc in draw_if_interactive(cls)
    183             manager = Gcf.get_active()
    184             if manager:
--> 185                 cls.trigger_manager_draw(manager)
    186
    187     @classmethod

TypeError: unbound method trigger_manager_draw() must be called with _BackendMac instance as first argument (got FigureManagerMac instance instead)