• Matplotlib 'master', Python 2.7.12 Linux x86_64

• System python, matplotlib installed with python setup.py build; pip install -e --user .

• SSCCE:

  >>> import matplotlib.pyplot as plt
  >>> from mpl_toolkits.mplot3d import Axes3D
  >>> ax = plt.subplot(111, projection='3d')
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/pyplot.py", line 1042, in subplot
  fig = gcf()
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/pyplot.py", line 585, in gcf
  return figure()
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/pyplot.py", line 534, in figure
  **kwargs)
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/backends/backend_qt5agg.py", line 44, in new_figure_manager
  return new_figure_manager_given_figure(num, thisFig)
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/backends/backend_qt5agg.py", line 52, in new_figure_manager_given_figure
  return FigureManagerQT(canvas, num)
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/backends/backend_qt5.py", line 494, in __init__
  tbs_height = self.toolbar.sizeHint().height()
  File "/home/larsoner/custombuilds/matplotlib/lib/matplotlib/backends/backend_qt5.py", line 643, in sizeHint
  size = super().sizeHint()
  TypeError: super() takes at least 1 argument (0 given)
  
  

• Works on 1.5.3, can git blame if this makes sense.

Changing it to the Py27-compatible size = super(NavigationToolbar2QT, self).sizeHint() seems to work, happy to open a PR if it seem like the right fix.