matplotlib - Python: "ModuleNotFoundError", but module is installed? -


i realize seems generic question, answers pointed having 2 simultanious python installations - uninstalled other one.

currently run code pycharm 2017.1.5 (windows 10) python interpreter set python 3.6.1 (c:\anaconda3\python.exe), i.e. installed anaconda3, includes matplotlib, , run pycharm using ananconda3-interpreter.

i've checked in anaconda navigator matplotlib 2.0.2 installed in environment.

a minimal (non-working) example:

import matplotlib.pyplot plt  plt.plot(range(10)) plt.show()

returns following error:

c:\anaconda3\python.exe c:/users/john/documents/cpu/master/untitled/main11.py traceback (most recent call last):   file "c:/users/john/documents/cpu/master/untitled/main11.py", line 1, in <module>     import matplotlib.pyplot plt   file "c:\anaconda3\lib\site-packages\matplotlib\pyplot.py", line 29, in <module>     import matplotlib.colorbar   file "c:\anaconda3\lib\site-packages\matplotlib\colorbar.py", line 34, in <module>     import matplotlib.collections collections   file "c:\anaconda3\lib\site-packages\matplotlib\collections.py", line 37, in <module>     import matplotlib.lines mlines   file "c:\anaconda3\lib\site-packages\matplotlib\lines.py", line 28, in <module>     matplotlib.markers import markerstyle modulenotfounderror: no module named 'matplotlib.markers'  process finished exit code 1

this ran fine 2 weeks ago, not now. knowledge, didn't change or update anything. module loads correctly, seems change in module content? if so: how did happen , how can fix it?

it difficult answer question directly, however, have seen large amount of issues in corporate windows environments pycharm , anaconda these of issues may having

  1. check path correctly pointing anaconda locations

    import sys sys.path

  2. check files have not been migrated c:\users\username\appdata\roaming team

  3. purge system python distributions. there may software distributions use internally package own python distribution. can included in path. example installing anaconda c:\ having installed in users\local\appdata or 'c:\program files' months before , forgotten!

a way of directly debugging problem navigate following directory in ipython

c:\anaconda3\lib\site-packages\matplotlib

and try import matplotlib.markers

if fails then try

import matplotlib matplotlib.__file__

you should check result gives

'c:\\anaconda3\\lib\\site-packages\\matplotlib\\__init__.pyc'

as there matplotlib version installed taking precedence. fall under 1 of issues above correct.


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