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ipython crash with matplotlib during picking · Issue #1728 · ipython/ipython · GitHub

ipython crashing when trying to use the picker in matplotlib. Will try and create a small test case program when I can. Thanks

***************************************************************************

IPython post-mortem report

{'commit_hash': '',
 'commit_source': '(none found)',
 'ipython_path': '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython',
 'ipython_version': '0.11',
 'os_name': 'posix',
 'platform': 'Darwin-11.3.0-x86_64-i386-64bit',
 'sys_executable': '/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python',
 'sys_platform': 'darwin',
 'sys_version': '2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]'}

***************************************************************************



***************************************************************************

Crash traceback:

---------------------------------------------------------------------------
RuntimeErrorPython 2.7.2: /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
                                                   Sat May 12 12:38:53 2012
A problem occured executing Python code.  Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backend_bases.pyc in button_press_event(self=FigureCanvas object 0x111ccd368 wrapping NSView 0x11f9861a0, x=273, y=577, button=1, guiEvent=None)
   1617 
   1618 
   1619     def button_press_event(self, x, y, button, guiEvent=None):
   1620         """
   1621         Backend derived classes should call this function on any mouse
   1622         button press.  x,y are the canvas coords: 0,0 is lower, left.
   1623         button and key are as defined in :class:`MouseEvent`.
   1624 
   1625         This method will be call all functions connected to the
   1626         'button_press_event' with a :class:`MouseEvent` instance.
   1627 
   1628         """
   1629         self._button = button
   1630         s = 'button_press_event'
   1631         mouseevent = MouseEvent(s, self, x, y, button, self._key, guiEvent=guiEvent)
-> 1632         self.callbacks.process(s, mouseevent)
   1633 
   1634     def button_release_event(self, x, y, button, guiEvent=None):
   1635         """
   1636         Backend derived classes should call this function on any mouse
   1637         button release.
   1638 
   1639         *x*
   1640             the canvas coordinates where 0=left
   1641 
   1642         *y*
   1643             the canvas coordinates where 0=bottom
   1644 
   1645         *guiEvent*
   1646             the native UI event that generated the mpl event
   1647 

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/cbook.pyc in process(self=, s='button_press_event', *args=(,), **kwargs={})
    241                 continue
    242             else:
    243                 return
    244 
    245     def process(self, s, *args, **kwargs):
    246         """
    247         process signal *s*.  All of the functions registered to receive
    248         callbacks on *s* will be called with *\*args* and *\*\*kwargs*
    249         """
    250         if s in self.callbacks:
    251             for cid, proxy in self.callbacks[s].items():
    252                 # Clean out dead references
    253                 if proxy.inst is not None and proxy.inst() is None:
    254                     del self.callbacks[s][cid]
    255                 else:
--> 256                     proxy(*args, **kwargs)
        global _ = undefined
    257 
    258 
    259 class Scheduler(threading.Thread):
    260     """
    261     Base class for timeout and idle scheduling
    262     """
    263     idlelock = threading.Lock()
    264     id = 0
    265 
    266     def __init__(self):
    267         threading.Thread.__init__(self)
    268         self.id = Scheduler.id
    269         self._stopped = False
    270         Scheduler.id += 1
    271         self._stopevent = threading.Event()

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/cbook.pyc in __call__(self=, *args=(,), **kwargs={})
    174             Proxy for a call to the weak referenced object. Take
    175             arbitrary params to pass to the callable.
    176 
    177             Raises `ReferenceError`: When the weak reference refers to
    178             a dead object
    179             '''
    180             if self.inst is not None and self.inst() is None:
    181                 raise ReferenceError
    182             elif self.inst is not None:
    183                 # build a new instance method with a strong reference to the instance
    184                 mtd = new.instancemethod(self.func, self.inst(), self.klass)
    185             else:
    186                 # not a bound method, just return the func
    187                 mtd = self.func
    188             # invoke the callable and return the result
--> 189             return mtd(*args, **kwargs)
        global From = undefined
        global http = undefined
        global aspn.activestate.com = undefined
        global ASPN = undefined
        global Cookbook = undefined
        global Python = undefined
        global Recipe = undefined
    190 
    191         def __eq__(self, other):
    192             '''
    193             Compare the held function and instance with that held by
    194             another proxy.
    195             '''
    196             try:
    197                 if self.inst is None:
    198                     return self.func == other.func and other.inst is None
    199                 else:
    200                     return self.func == other.func and self.inst() == other.inst()
    201             except Exception:
    202                 return False
    203 
    204         def __ne__(self, other):

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backend_bases.pyc in pick(self=FigureCanvas object 0x111ccd368 wrapping NSView 0x11f9861a0, mouseevent=)
   1507                 self._active[a] = a.get_color()
   1508             elif hasattr(a,'get_edgecolor'):
   1509                 self._active[a] = (a.get_edgecolor(),a.get_facecolor())
   1510             else: self._active[a] = None
   1511         for a in enter:
   1512             if hasattr(a,'get_color'):
   1513                 a.set_color('red')
   1514             elif hasattr(a,'get_edgecolor'):
   1515                 a.set_edgecolor('red')
   1516                 a.set_facecolor('lightblue')
   1517             else: self._active[a] = None
   1518         self.draw_idle()
   1519 
   1520     def pick(self, mouseevent):
   1521         if not self.widgetlock.locked():
-> 1522             self.figure.pick(mouseevent)
   1523 
   1524     def blit(self, bbox=None):
   1525         """
   1526         blit the canvas in bbox (default entire canvas)
   1527         """
   1528         pass
   1529 
   1530     def resize(self, w, h):
   1531         """
   1532         set the canvas size in pixels
   1533         """
   1534         pass
   1535 
   1536     def draw_event(self, renderer):
   1537         """

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/artist.pyc in pick(self=, mouseevent=)
    317                 inside,prop = picker(self,mouseevent)
    318             else:
    319                 inside,prop = self.contains(mouseevent)
    320             if inside:
    321                 self.figure.canvas.pick_event(mouseevent, self, **prop)
    322 
    323         # Pick children
    324         for a in self.get_children():
    325             # make sure the event happened in the same axes
    326             ax = getattr(a, 'axes', None)
    327             if mouseevent.inaxes is None or mouseevent.inaxes==ax:
    328                 # we need to check if mouseevent.inaxes is None
    329                 # because some objects associated with an axes (eg a
    330                 # tick label) can be outside the bounding box of the
    331                 # axes and inaxes will be None
--> 332                 a.pick(mouseevent)
        global function = undefined
        global signature = undefined
        global boolean = undefined
        global match = undefined
        global artist = undefined
    333 
    334     def set_picker(self, picker):
    335         """
    336         Set the epsilon for picking used by this artist
    337 
    338         *picker* can be one of the following:
    339 
    340           * *None*: picking is disabled for this artist (default)
    341 
    342           * A boolean: if *True* then picking will be enabled and the
    343             artist will fire a pick event if the mouse event is over
    344             the artist
    345 
    346           * A float: if picker is a number it is interpreted as an
    347             epsilon tolerance in points and the artist will fire

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/axes.pyc in pick(self=, *args=(,))
   3023         """
   3024         return self.patch.contains_point(point, radius=1.0)
   3025 
   3026     def pick(self, *args):
   3027         """
   3028         call signature::
   3029 
   3030             pick(mouseevent)
   3031 
   3032         each child artist will fire a pick event if mouseevent is over
   3033         the artist and the artist has picker set
   3034         """
   3035         if len(args)>1:
   3036             raise DeprecationWarning('New pick API implemented -- '
   3037                                      'see API_CHANGES in the src distribution')
-> 3038         martist.Artist.pick(self,args[0])
   3039 
   3040     def __pick(self, x, y, trans=None, among=None):
   3041         """
   3042         Return the artist under point that is closest to the *x*, *y*.
   3043         If *trans* is *None*, *x*, and *y* are in window coords,
   3044         (0,0 = lower left).  Otherwise, *trans* is a
   3045         :class:`~matplotlib.transforms.Transform` that specifies the
   3046         coordinate system of *x*, *y*.
   3047 
   3048         The selection of artists from amongst which the pick function
   3049         finds an artist can be narrowed using the optional keyword
   3050         argument *among*. If provided, this should be either a sequence
   3051         of permitted artists or a function taking an artist as its
   3052         argument and returning a true value if and only if that artist
   3053         can be selected.

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/artist.pyc in pick(self=, mouseevent=)
    317                 inside,prop = picker(self,mouseevent)
    318             else:
    319                 inside,prop = self.contains(mouseevent)
    320             if inside:
    321                 self.figure.canvas.pick_event(mouseevent, self, **prop)
    322 
    323         # Pick children
    324         for a in self.get_children():
    325             # make sure the event happened in the same axes
    326             ax = getattr(a, 'axes', None)
    327             if mouseevent.inaxes is None or mouseevent.inaxes==ax:
    328                 # we need to check if mouseevent.inaxes is None
    329                 # because some objects associated with an axes (eg a
    330                 # tick label) can be outside the bounding box of the
    331                 # axes and inaxes will be None
--> 332                 a.pick(mouseevent)
        global function = undefined
        global signature = undefined
        global boolean = undefined
        global match = undefined
        global artist = undefined
    333 
    334     def set_picker(self, picker):
    335         """
    336         Set the epsilon for picking used by this artist
    337 
    338         *picker* can be one of the following:
    339 
    340           * *None*: picking is disabled for this artist (default)
    341 
    342           * A boolean: if *True* then picking will be enabled and the
    343             artist will fire a pick event if the mouse event is over
    344             the artist
    345 
    346           * A float: if picker is a number it is interpreted as an
    347             epsilon tolerance in points and the artist will fire

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/artist.pyc in pick(self=, mouseevent=)
    304     def pick(self, mouseevent):
    305         """
    306         call signature::
    307 
    308           pick(mouseevent)
    309 
    310         each child artist will fire a pick event if *mouseevent* is over
    311         the artist and the artist has picker set
    312         """
    313         # Pick self
    314         if self.pickable():
    315             picker = self.get_picker()
    316             if callable(picker):
    317                 inside,prop = picker(self,mouseevent)
    318             else:
--> 319                 inside,prop = self.contains(mouseevent)
        global A = undefined
        global tkstyle = undefined
        global set = undefined
        global command = undefined
        global kwargs = undefined
        global to = undefined
        global properties = undefined
    320             if inside:
    321                 self.figure.canvas.pick_event(mouseevent, self, **prop)
    322 
    323         # Pick children
    324         for a in self.get_children():
    325             # make sure the event happened in the same axes
    326             ax = getattr(a, 'axes', None)
    327             if mouseevent.inaxes is None or mouseevent.inaxes==ax:
    328                 # we need to check if mouseevent.inaxes is None
    329                 # because some objects associated with an axes (eg a
    330                 # tick label) can be outside the bounding box of the
    331                 # axes and inaxes will be None
    332                 a.pick(mouseevent)
    333 
    334     def set_picker(self, picker):

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.pyc in contains(self=, mouseevent=)
    196         #self.set_bbox(dict(pad=0))
    197 
    198     def contains(self,mouseevent):
    199         """Test whether the mouse event occurred in the patch.
    200 
    201         In the case of text, a hit is true anywhere in the
    202         axis-aligned bounding-box containing the text.
    203 
    204         Returns True or False.
    205         """
    206         if callable(self._contains): return self._contains(self,mouseevent)
    207 
    208         if not self.get_visible() or self._renderer is None:
    209             return False,{}
    210 
--> 211         l,b,w,h = self.get_window_extent().bounds
        global j = undefined
        r = undefined
        global n = undefined
        global r3 = undefined
        global xd = undefined
        global D.j = undefined
    212 
    213         r = l+w
    214         t = b+h
    215         xyverts = (l,b), (l, t), (r, t), (r, b)
    216         x, y = mouseevent.x, mouseevent.y
    217         inside = nxutils.pnpoly(x, y, xyverts)
    218 
    219         return inside,{}
    220 
    221     def _get_xy_display(self):
    222         'get the (possibly unit converted) transformed x, y in display coords'
    223         x, y = self.get_position()
    224         return self.get_transform().transform_point((x,y))
    225 
    226     def _get_multialignment(self):

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.pyc in get_window_extent(self=, renderer=None, dpi=None)
    732         '''
    733         #return _unit_box
    734         if not self.get_visible(): return Bbox.unit()
    735         if dpi is not None:
    736             dpi_orig = self.figure.dpi
    737             self.figure.dpi = dpi
    738         if self.get_text() == '':
    739             tx, ty = self._get_xy_display()
    740             return Bbox.from_bounds(tx,ty,0,0)
    741 
    742         if renderer is not None:
    743             self._renderer = renderer
    744         if self._renderer is None:
    745             raise RuntimeError('Cannot get window extent w/o renderer')
    746 
--> 747         bbox, info = self._get_layout(self._renderer)
        global pixels = undefined
        global the = undefined
        global lower = undefined
        global left = undefined
        global corner = undefined
        global of = undefined
        global figure = undefined
    748         x, y = self.get_position()
    749         x, y = self.get_transform().transform_point((x, y))
    750         bbox = bbox.translated(x, y)
    751         if dpi is not None:
    752             self.figure.dpi = dpi_orig
    753         return bbox
    754 
    755     def set_backgroundcolor(self, color):
    756         """
    757         Set the background color of the text by updating the bbox.
    758 
    759         .. seealso::
    760 
    761             :meth:`set_bbox`
    762                To change the position of the bounding box.

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.pyc in _get_layout(self=, renderer=)
    285             if isinstance(renderer, MixedModeRenderer):
    286                 def get_text_width_height_descent(*kl, **kwargs):
    287                     return RendererBase.get_text_width_height_descent(renderer._renderer,
    288                                                                       *kl, **kwargs)
    289             else:
    290                 def get_text_width_height_descent(*kl, **kwargs):
    291                     return RendererBase.get_text_width_height_descent(renderer,
    292                                                                       *kl, **kwargs)
    293         else:
    294             get_text_width_height_descent = renderer.get_text_width_height_descent
    295 
    296         # Find full vertical extent of font,
    297         # including ascenders and descenders:
    298         tmp, lp_h, lp_bl = get_text_width_height_descent('lp',
    299                                                          self._fontproperties,
--> 300                                                          ismath=False)
    301         offsety = lp_h * self._linespacing
    302 
    303         baseline = 0
    304         for i, line in enumerate(lines):
    305             clean_line, ismath = self.is_math_text(line)
    306             if clean_line:
    307                 w, h, d = get_text_width_height_descent(clean_line,
    308                                                         self._fontproperties,
    309                                                         ismath=ismath)
    310             else:
    311                 w, h, d = 0, 0, 0
    312 
    313             whs[i] = w, h
    314 
    315             # For general multiline text, we will have a fixed spacing

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.pyc in get_text_width_height_descent(self=, s='lp', prop=, ismath=False)
    149             # todo: handle props
    150             texmanager = self.get_texmanager()
    151             fontsize = prop.get_size_in_points()
    152             w, h, d = texmanager.get_text_width_height_descent(s, fontsize,
    153                                                                renderer=self)
    154             return w, h, d
    155         if ismath:
    156             ox, oy, width, height, descent, fonts, used_characters = \
    157                 self.mathtext_parser.parse(s, self.dpi, prop)
    158             return width, height, descent
    159         family =  prop.get_family()
    160         weight = prop.get_weight()
    161         style = prop.get_style()
    162         points = prop.get_size_in_points()
    163         size = self.points_to_pixels(points)
--> 164         width, height, descent = self.gc.get_text_width_height_descent(unicode(s), family, size, weight, style)
        global f = undefined
        global S = undefined
        global Nt = undefined
        global t = undefined
        global i = undefined
        global P6i = undefined
        global opent = undefined
        global indexR = undefined
        global splitR = undefined
        global intt = undefined
        global AssertionErrort = undefined
        global len = undefined
        global R = undefined
        global RX = undefined
        global imagefilet = undefined
        global linet = undefined
        global it = undefined
        global magicR = undefined
        global maxcolort = undefined
        global imagedata = undefined
        global ss = undefined
        global Library = undefined
        global Frameworks = undefined
        global Python.framework = undefined
        global Versions = undefined
        global lib = undefined
        global python2 = undefined
        global site = undefined
        global packages = undefined
        global matplotlib = 
        global backends = undefined
        global backend_macosx.pyR = undefined
        s = 'lp'
        global c = undefined
        global C = undefined
        global sQ = undefined
        global j = undefined
        global x = undefined
        global W = undefined
        d = undefined
        global N = undefined
        global axesR = undefined
        global xaxist = undefined
        global panR = undefined
        global directionR = undefined
        global selectedR = undefined
        global backend_macosx.pyt = undefined
        global panx = undefined
        global yaxisR = undefined
        global pany = undefined
        global zoomR = undefined
        global zoomx = undefined
        global zoomy = undefined
        global G = undefined
        global s3 = undefined
        global k = undefined
        global r = undefined
        global Ns = undefined
        global Save = undefined
        global the = undefined
        global figure = undefined
        global choose_save_fileR = undefined
        global print_figure = undefined
        global save_figure = undefined
        global B = undefined
        global sP = undefined
        global e = undefined
        global Z = undefined
        global RS = undefined
        global NR = undefined
        global _init_toolbar = undefined
        global s5 = undefined
        global set_rubberbandR = undefined
        global eventt = undefined
        global x0t = undefined
        global y0t = undefined
        global x1t = undefined
        global y1 = undefined
        global draw_rubberband = undefined
        global remove_rubberband = undefined
        global release = undefined
        global set_cursor = undefined
        global cursor = undefined
        global sD = undefined
        global figsizei = undefined
        global topg = undefined
        global subplots_adjustR = undefined
        global toolfigR = undefined
        global tool = undefined
        global prepare_configure_subplots = undefined
        global utf = undefined
        global set_messaget = undefined
        global encode = undefined
        global __future__R = undefined
        global R.t = undefined
        global matplotlib._pylab_helpersR = undefined
        global matplotlib.backend_basesR = undefined
        global matplotlib.cbookR = undefined
        global matplotlib.figureR = undefined
        global matplotlib.pathR = undefined
        global matplotlib.mathtextR = undefined
        global matplotlib.colorsR = undefined
        global matplotlib.widgetsR = undefined
        global matplotlib.backendsR = undefined
        global TimerR = undefined
        global module = undefined
        global s2.V = undefined
    165         return  width, height, 0.0*descent
    166 
    167     def flipy(self):
    168         return False
    169 
    170     def points_to_pixels(self, points):
    171         return points/72.0 * self.dpi
    172 
    173     def option_image_nocomposite(self):
    174         return True
    175 
    176 class GraphicsContextMac(_macosx.GraphicsContext, GraphicsContextBase):
    177     """
    178     The GraphicsContext wraps a Quartz graphics context. All methods
    179     are implemented at the C-level in macosx.GraphicsContext. These

RuntimeError: CGContextRef is NULL

***************************************************************************

History of session input:get_ipython().magic(u"run sudoku.py")pylab.ion()pylab.show()a.xaxis.set_ticks([])a=ax[0]a.xaxis.set_ticks([])ax[1].xaxis.set_ticks([])ax[2].xaxis.set_ticks([])pylab.draw()ax[0].set_xticks([])ax[0].set_yticks([])ax[1].set_yticks([])get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")ax[0].scaled()a = ax[0]ax[0].axes('scaled')ax[0].axis('scaled')get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")pylab.subplot(9981)pylab.subplot('9981')pylab.subplot('999')get_ipython().magic(u"run sudoku.py")4%33%32%33%3get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")pylab.show()get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")a = ax[0]a = ax[0][0]get_ipython().magic(u"pinfo a.set_xaxis")a.set_xaxis()get_ipython().magic(u"pinfo a.set_frame_on")get_ipython().magic(u"pinfo a.frame")a.frame()get_ipython().magic(u"pinfo a.spines")a.spines.keys()a.spines['right']af = a.spines['right']af.set_linewidth(2)af.set_linewidth(23)get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")a = ax[0][0]a.set('xlim',[0,3],'ylim',[0,3])a.setp('xlim',[0,3],'ylim',[0,3])a.setp('xlim',[0,3],'ylim',[0,3])get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")a = ax[0][0]get_ipython().magic(u"pinfo a.text")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")grid[0[0]
]grid[0][0]grid[0][1]grid[0][2]y = [x for x in grid[0][2]]yy = [x for x in grid[0][3]]yy = [x for x in grid[0][5]]yget_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"pinfo pylab.text")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"pinfo pylab.text")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")grid = sudoku.reduce(grid)import sudokugrid = sudoku.reduce(grid)sudoku.show_grid(grid)pylab.show()sudoku.show_grid(grid)a = []a += 2a += [2]aa += [2]areload(sudoku)get_ipython().magic(u"run sudoku.py")txtreload(sudoku)pylab.close()pylab.close('all')get_ipython().magic(u"run sudoku.py")grid = sudoku.reduce(grid)sudoku.show_grid(grid)[t.clear() for t in txt]t.remove()[t.remove() for t in txt]get_ipython().magic(u"pinfo pylab.clear")txt[t.remove() for t in txt]tt.remove()del ttxtdel txt[0]len(txt)del txt[0]len(txt)del txt[23]pylab.draw()get_ipython().magic(u"run sudoku.py")del txt[0]pylab.draw()pylab.show()txt[0]t = txt[0]t.get_text()del tpylab.show()pylab.draw()t = txt[0]t.get_text()len(txt)del txt[0]pylab.draw()len(txt)del txt[0]len(txt)txt[0].get_text()del txt[0]pylab.show()pylab.draw()pylab.show()g = pylab.gca()gget_ipython().magic(u"pinfo g.text")g.get()get_ipython().magic(u"pinfo pylab.text")pylab.close('all')get_ipython().magic(u"run sudoku.py")txt[0].get_text()txt[0].set_text('H')del txt[0]txt[0].set_text('H')pylab.draw()txt[0].remove()pylab.draw()get_ipython().magic(u"run sudoku.py")import sudokureload(sudoku)grid = reduce(grid)grid = sudoku.reduce(grid)txt=sudoku.show_grid(grid,txt)reload(sudoku)get_ipython().magic(u"run sudoku.py")gridget_ipython().magic(u"run sudoku.py")gridget_ipython().magic(u"run sudoku.py")reload(sudoku)gridgrid=sudoku.reduce_cell(grid,0,2)gridreload(sudoku)grid=sudoku.reduce_cell(grid,0,2)grid[0][2]saa = set([1,2,3,4])aa.discard(3)aa.discard([3])a = set([1,2,3,4])b = set([1])a.discard(b)areload(sudoku)get_ipython().magic(u"run sudoku.py")reload(sudoku)reload(sudoku)get_ipython().magic(u"run sudoku.py")reload(sudoku)grid=sudoku.reduce_cell(grid,0,2)reload(sudoku)get_ipython().magic(u"run sudoku.py")grid=sudoku.reduce_cell(grid,0,2)gridget_ipython().magic(u"run sudoku.py")show_grid(grid,txt)grid = sudoku.example_grid()txt = show_grid(grid,txt)pylab.close('all')txt = sudoku.show_grid(grid)sudoku.plot_grid_background()txt = sudoku.show_grid(grid)grid = sudoku.reduce_cell(grid,0,2)txt = sudoku.show_grid(grid)reload(sudoku)grid = sudoku.reduce_cell(grid,0,2)txt = sudoku.show_grid(grid,txt)grid = sudoku.example_grid()sudoku.plot_grid_background()txt = sudoku.show_grid(grid)txt = sudoku.show_grid(grid,txt)grid = sudoku.reduce_cell(grid,0,2)txt = sudoku.show_grid(grid,txt)reload(sudoku)get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")get_ipython().magic(u"run sudoku.py")pylab.close('all')get_ipython().magic(u"run sudoku.py")
*** Last line of input (may not be in above history):
run sudoku.py

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