I recently upgrade to Python 2.7 (I used EPD Free for the install which comes with matplotlib 1.1.0) and I’m getting the following error when I try to plot dates. I’ve tried a few different backends, but they all seem to give the same error. I had no issues using Python 2.6 up to now. I think this may have to do with the new requirement in Python 2.7 that if you passed a float to a function that was defined as an int, it now raises a TypeError (instead of a DeprecationWarning).
Traceback (most recent call last):
File “C:\Python27\lib\site-packages\matplotlib\backends\backend_wx.py”, line 1289, in _onLeftButtonDown
FigureCanvasBase.button_press_event(self, x, y, 1, guiEvent=evt)
File “C:\Python27\lib\site-packages\matplotlib\backend_bases.py”, line 1632, in button_press_event
self.callbacks.process(s, mouseevent)
File “C:\Python27\lib\site-packages\matplotlib\cbook.py”, line 256, in process
proxy(*args, **kwargs)
File “C:\Python27\lib\site-packages\matplotlib\cbook.py”, line 189, in call
return mtd(*args, **kwargs)
File “C:\Python27\lib\site-packages\matplotlib\backend_bases.py”, line 1522, in pick
self.figure.pick(mouseevent)
File “C:\Python27\lib\site-packages\matplotlib\artist.py”, line 332, in pick
a.pick(mouseevent)
File “C:\Python27\lib\site-packages\matplotlib\axes.py”, line 3038, in pick
martist.Artist.pick(self,args[0])
File “C:\Python27\lib\site-packages\matplotlib\artist.py”, line 332, in pick
a.pick(mouseevent)
File “C:\Python27\lib\site-packages\matplotlib\artist.py”, line 321, in pick
self.figure.canvas.pick_event(mouseevent, self, **prop)
File “C:\Python27\lib\site-packages\matplotlib\backend_bases.py”, line 1598, in pick_event
self.callbacks.process(s, event)
File “C:\Python27\lib\site-packages\matplotlib\cbook.py”, line 256, in process
proxy(*args, **kwargs)
File “C:\Python27\lib\site-packages\matplotlib\cbook.py”, line 189, in call
return mtd(*args, **kwargs)
File “C:\src\QC_DUAL\src\QC_DUAL\databrowser.py”, line 284, in onpick
self.fig.canvas.draw()
File “C:\Python27\lib\site-packages\matplotlib\backends\backend_wxagg.py”, line 59, in draw
FigureCanvasAgg.draw(self)
File “C:\Python27\lib\site-packages\matplotlib\backends\backend_agg.py”, line 401, in draw
self.figure.draw(self.renderer)
File “C:\Python27\lib\site-packages\matplotlib\artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “C:\Python27\lib\site-packages\matplotlib\figure.py”, line 884, in draw
func(*args)
File “C:\Python27\lib\site-packages\matplotlib\artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “C:\Python27\lib\site-packages\matplotlib\axes.py”, line 1983, in draw
a.draw(renderer)
File “C:\Python27\lib\site-packages\matplotlib\artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “C:\Python27\lib\site-packages\matplotlib\axis.py”, line 1036, in draw
ticks_to_draw = self._update_ticks(renderer)
File “C:\Python27\lib\site-packages\matplotlib\axis.py”, line 926, in _update_ticks
tick_tups = [ t for t in self.iter_ticks()]
File “C:\Python27\lib\site-packages\matplotlib\axis.py”, line 873, in iter_ticks
majorLocs = self.major.locator()
File “C:\Python27\lib\site-packages\matplotlib\dates.py”, line 594, in call
dates = self.rule.between(dmin, dmax, True)
File “C:\Python27\lib\site-packages\dateutil\rrule.py”, line 207, in between
for i in gen:
File “C:\Python27\lib\site-packages\dateutil\rrule.py”, line 451, in _iter
dayset, start, end = getdayset(year, month, day)
File “C:\Python27\lib\site-packages\dateutil\rrule.py”, line 797, in ddayset
i = datetime.date(year, month, day).toordinal()-self.yearordinal
TypeError: integer argument expected, got float