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homopolymer opened this issue Dec 8, 2015 · 6 comments
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No module named externals #5633

homopolymer opened this issue Dec 8, 2015 · 6 comments

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@homopolymer
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I installed matplotlib and scikit-bio via conda. An import error listed below occurred when I imported. Appreciate any help to solve it.

Python 2.7.11 |Anaconda 2.4.0 (64-bit)| (default, Dec 6 2015, 18:08:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux2
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

import skbio
Traceback (most recent call last):
File "", line 1, in
File "/home/fzeng/anaconda/lib/python2.7/site-packages/skbio/init.py", line 14, in
import skbio.io # noqa
File "/home/fzeng/anaconda/lib/python2.7/site-packages/skbio/io/init.py", line 230, in
import_module('skbio.io.format.ordination')
File "/home/fzeng/anaconda/lib/python2.7/importlib/init.py", line 37, in import_module
import(name)
File "/home/fzeng/anaconda/lib/python2.7/site-packages/skbio/io/format/ordination.py", line 195, in
from skbio.stats.ordination import OrdinationResults
File "/home/fzeng/anaconda/lib/python2.7/site-packages/skbio/stats/ordination/init.py", line 115, in
from ._correspondence_analysis import CA
File "/home/fzeng/anaconda/lib/python2.7/site-packages/skbio/stats/ordination/_correspondence_analysis.py", line 13, in
from ._base import Ordination, OrdinationResults
File "/home/fzeng/anaconda/lib/python2.7/site-packages/skbio/stats/ordination/_base.py", line 17, in
from mpl_toolkits.mplot3d import Axes3D
File "/home/fzeng/anaconda/lib/python2.7/site-packages/mpl_toolkits/mplot3d/init.py", line 4, in
from matplotlib.externals import six
ImportError: No module named externals
@jenshnielsen
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It sounds like you somehow have two versions of matplotlib installed on top of each other.
I suggest uninstalling matplotlib with conda and then making sure that all leftovers of matplotlib and mpl_toolkits are removed from /home/fzeng/anaconda/lib/python2.7/site-packages and then try again.

@homopolymer
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Hi Nielsen, it works following your suggestions and thanks a lot. May I ask one more question that how do you find out there are two conflicting versions of matplotlib?

@jenshnielsen
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It was just a guess. But there were two reasons

  • The six code was moved to external in 1.5 so it seems likely that some of your code is 1.5 and some of it older.
  • mpl_toolkits is a namespace package to allow basemap and other external packages to be installed into it. This makes it unreliable to uninstall when changing versions. I hope to be able to change this in a future version to avoid namespace packages.

@actsasgeek actsasgeek mentioned this issue Feb 5, 2017
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@Phlya
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Phlya commented May 30, 2017

I am having this problem now, and re-installing matplotlib didn't help... Anything I might be missing? Ubuntu 16.04, installation of python 3.5 parallel with 2.7 (tried reinstalling maptlotlib in both installations).

s1529682:~$ python3
Python 3.5.2 (default, Nov 17 2016, 17:05:23) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from mpl_toolkits.axes_grid1 import ImageGrid
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/mpl_toolkits/axes_grid1/__init__.py", line 4, in <module>
    from matplotlib.externals import six
ImportError: No module named 'matplotlib.externals'

@WeatherGod
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WeatherGod commented May 30, 2017 via email

@Phlya
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Phlya commented May 31, 2017

Ah, good idea, thanks, this helped!

@dyf dyf mentioned this issue Nov 21, 2017
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@chipmuenk chipmuenk mentioned this issue Nov 24, 2017
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4 participants
@WeatherGod @jenshnielsen @Phlya @homopolymer
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