[Matplotlib-users] ImportError on Anaconda Win64 system

[Benjamin Root]

import matplotlib
matplotlib.get_backend()

On Fri, Oct 30, 2015 at 4:24 PM, Jonno <jonnojohnson at gmail.com> wrote:

> Argh this is what I get from trying to do too many things at once.
>
> Correction, if I try to do:
> from pylab import *  - with either WxAgg or Qt4Agg set in matplotlibrc I
> get:
>
> Python 2.7.10 |Anaconda 2.3.0 (64-bit)| (default, Oct 21 2015, 19:35:23)
> [MSC v.
> 1500 64 bit (AMD64)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> Anaconda is brought to you by Continuum Analytics.
> Please check out: http://continuum.io/thanks and https://anaconda.org
> >>> from pylab import *
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\pylab.
> py", line 1, in <module>
>     from matplotlib.pylab import *
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\matplo
> tlib\pylab.py", line 231, in <module>
>     import matplotlib.finance
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\matplo
> tlib\finance.py", line 38, in <module>
>     from matplotlib.collections import LineCollection, PolyCollection
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\matplo
> tlib\collections.py", line 27, in <module>
>     import matplotlib.backend_bases as backend_bases
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\matplo
> tlib\backend_bases.py", line 56, in <module>
>     import matplotlib.textpath as textpath
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\matplo
> tlib\textpath.py", line 22, in <module>
>     from matplotlib.mathtext import MathTextParser
>   File
> "C:\Users\marnj\AppData\Local\Continuum\Anaconda\lib\site-packages\matplo
> tlib\mathtext.py", line 63, in <module>
>     import matplotlib._png as _png
> ImportError: DLL load failed: The specified module could not be found.
>
> How do I check the selected backend from within a python session?
>
>
> On Fri, Oct 30, 2015 at 2:41 PM, Benjamin Root <ben.v.root at gmail.com>
> wrote:
>
>> Then I suspect that the backend isn't really set properly, or matplotlib
>> is picking up the parameter from somewhere else. I just don't see how
>> having WxAgg as your backend could possibly trigger an import of the Qt
>> libraries.
>>
>> On Fri, Oct 30, 2015 at 3:35 PM, Jonno <jonnojohnson at gmail.com> wrote:
>>
>>> Both.
>>>
>>> On Fri, Oct 30, 2015 at 1:08 PM, Benjamin Root <ben.v.root at gmail.com>
>>> wrote:
>>>
>>>> Doing that from IPython or Python?
>>>>
>>>> On Fri, Oct 30, 2015 at 1:55 PM, Jonno <jonnojohnson at gmail.com> wrote:
>>>>
>>>>> I also get the same import error DLL load failed if I set the backend
>>>>> to WXAgg in matplotlibrc then try from pylab import *
>>>>>
>>>>>
>>>>>
>>>>> On Fri, Oct 30, 2015 at 7:50 AM, Jens Nielsen <jenshnielsen at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> If that fails that is a bug in PyQt/Qt or in your anaconda
>>>>>> installation and not a Matplotlib bug. You could try reinstall QT and PyQt.
>>>>>>
>>>>>> As a workaround you can tell Matplotlib to use a different backend
>>>>>> http://matplotlib.org/faq/usage_faq.html#what-is-a-backend
>>>>>>
>>>>>> BTW the matplotlib mailing list has changed to
>>>>>> matplotlib-users at python.org.
>>>>>>
>>>>>> best
>>>>>> Jens
>>>>>>
>>>>>> fre. 30. okt. 2015 kl. 12.43 skrev Jonno <jonnojohnson at gmail.com>:
>>>>>>
>>>>>>> Traceback (most recent call last):
>>>>>>>   File "<stdin>", line 1, in <module>
>>>>>>> ImportError: DLL load failed: The specified module could not be
>>>>>>> found.
>>>>>>>
>>>>>>> On Fri, Oct 30, 2015 at 2:26 AM, Jens Nielsen <
>>>>>>> jenshnielsen at gmail.com> wrote:
>>>>>>>
>>>>>>>> It sounds like your PyQt package is broken.
>>>>>>>>
>>>>>>>> What happens if you do:
>>>>>>>>
>>>>>>>> from PyQt4 import QtCore, QtGui
>>>>>>>>
>>>>>>>> in a python shell
>>>>>>>>
>>>>>>>> /Jens
>>>>>>>>
>>>>>>>> fre. 30. okt. 2015 kl. 03.06 skrev Jonno <jonnojohnson at gmail.com>:
>>>>>>>>
>>>>>>>>> Not sure where to post this.
>>>>>>>>>
>>>>>>>>> I have a fresh Anaconda Win64 python 2.7.10 install which I then
>>>>>>>>> updated using conda update --all.
>>>>>>>>>
>>>>>>>>> If it try to:
>>>>>>>>> from pylab import *
>>>>>>>>> I get the following:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> File
>>>>>>>>> "~\Anaconda\lib\site-packages\matplotlib\backends\qt_compat.py", line 91,
>>>>>>>>> in <module>
>>>>>>>>>   from PyQt4 import QtCore, QtGui
>>>>>>>>> ImportError: DLL load failed: The specified module could not be
>>>>>>>>> found.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I have the following installed:
>>>>>>>>> qt: 4.8.7
>>>>>>>>> pyqt 4.11.4
>>>>>>>>> matplotlib 1.4.3
>>>>>>>>>
>>>>>>>>> Should I open an issue on matplotlib github?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>> _______________________________________________
>>>>>>>>> Matplotlib-users mailing list
>>>>>>>>> Matplotlib-users at lists.sourceforge.net
>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Matplotlib-users mailing list
>>>>> Matplotlib-users at python.org
>>>>> https://mail.python.org/mailman/listinfo/matplotlib-users
>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20151030/8b90b56f/attachment.html>