When launch simple script in python IDLE, nothing happens, script exit with no error
when launch in win.promt have error : Intel MKL FATAL ERROR: Cannot load mkl_intel_thread.dll

import matplotlib.pyplot as plt
plt.scatter([0, 1 ], [0 , 1 ])
plt.show()

then i deleted numpy-1.12.0+mkl, and install simple numpy, and all work fine

uninstall matplotlib and numpy, then installed numpy-1.12.0+mkl and matplotlib, doesn't work
pip install matplotlib and simple numpy, numpy-1.12.0+mkl from .whl
Python 3.4.4, latest version matplotlib and numpy, win xp 32