Update for Python 3

[PeterStrom]

Whould be very nice with an update for Python 3.

[r3m0chop]

A quick 2to3 only indicates trivial changes. Hoping to test these shortly.

[r3m0chop]

The Python 2 inheritance of TiffFile from the file class, however, is another issue, as at: https://github.com/bgilbert/anonymize-slide/blob/master/anonymize-slide.py#L70:
class TiffFile(file):

Possible clues on approaching this might be found at: https://stackoverflow.com/questions/16085292/subclassing-file-objects-to-extend-open-and-close-operations-in-python-3

... most-specifically, see the following answer, with a similar requirement of supporting both Python 2.x and 3.x.:
https://stackoverflow.com/questions/16085292/subclassing-file-objects-to-extend-open-and-close-operations-in-python-3/16085830#16085830

Discussion around a different answer to the above (starting with "tl;dr Use a context manager", and using io.TextIOWrapper), at:
https://stackoverflow.com/questions/16085292/subclassing-file-objects-to-extend-open-and-close-operations-in-python-3/23796737#23796737
spawned a newly related question that might also be useful, at:
: https://stackoverflow.com/questions/33155741/subclassing-file-by-subclassing-io-textiowrapper-but-what-signature-does-its )

[r3m0chop]

Pull Request created (with only Python 3 support, since Python 2 now beyond life) at: PR #5

[jetic83]

+1

[a-dev-walker]

+1

[markemus]

@r3m0chop I added a pull request with an update for Python 3 a while back.

[kimalaacer]

I am trying this code on python 3.
getting this error. I tested the svs file and it opens with imagescope
still getting the error even if i use the absolute path.

C:\New folder>anonymize-slide.py test1.svs
Usage: anonymize-slide.py [options] file [file...]

anonymize-slide.py: error: specify a file