astropy.io.fits does not work properly under Python 3 -


i have code:

from astropy.io import fits  filename = tkinter.filedialog.askopenfilename() file = fits.open(filename)

when trying run under python 2.7, works fine. under python 3.4 there problem: 

warning: exception occurred matching hdu header appropriate hdu type:  [astropy.io.fits.hdu.base]  warning: hdu treated corrupted. [astropy.io.fits.hdu.base]

after warning, i'm unable perform operations on file. ideas how handle problem?


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