>>> from matplotlib import pyplot as plt

Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    from matplotlib import pyplot as plt
  File "C:\Python27\lib\site-packages\matplotlib\pyplot.py", line 24, in <module>
    import matplotlib.colorbar
  File "C:\Python27\lib\site-packages\matplotlib\colorbar.py", line 27, in <module>
    import matplotlib.artist as martist
  File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 8, in <module>
    from transforms import Bbox, IdentityTransform, TransformedBbox, \
  File "C:\Python27\lib\site-packages\matplotlib\transforms.py", line 35, in <module>
    from matplotlib._path import (affine_transform, count_bboxes_overlapping_bbox,
ImportError: DLL load failed: %1 is not a valid Win32 application.

Estou recebendo este erro. eu tenteiactivepython, python xy, mas o erro ainda persiste.