I have found the following problem: I tried a new Installation of Python 3.3.2 64-bit with WinPython-64bit-3.3.2.2 on a Windows 7 64 bit machine. Ever when I try to import matplotlib.pyplot (with some ...

Matplotlib is a leading library for data visualisation in Python, essential for creating impressive plots effortlessly. The library has influenced many other popular plotting libraries, highlighting ...

So you are somehow picking up mpl_toolkits from your insight_analytics conda environment, and I'm willing to bet that the matplotlib version in that conda environment is older than the one you are ...