new-coder
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not able to draw matplotlib graph
re: http://newcoder.io/Part-2-Graph
Python 2.7.3 (default, Sep 26 2012, 21:53:58) [GCC 4.7.2] on linux2
OS: Ubuntu 12.10
Packages in virtualenv: pip freeze argparse==1.2.1 ipython==0.13.1 matplotlib==1.2.0 numpy==1.7.0 wsgiref==0.1.2
works w/o virtualenv activated - weird.
I had this problem too. I believe that it is due to the Ubuntu build of python not including tk-dev, which has _tkagg (see http://stackoverflow.com/questions/15708226/python3-3-matplotlib-cannot-import-name-tkagg for more info). If you use apt to build it, it gets included, but I don't know how in a virtualenv. I eventually gave up trying to get the tkinter version working in a virtualenv, and used pygtk (which wasn't easy, but that is another story...).