Expose contents of an entry as a filelike object

[mskiptr]

The data I'm working with is provided as a RAR containing several NPY files. To avoid complex external pre-processing and pointless temporary files, I was trying to keep everything in Python. That is fully possible as Numpy can be given not just a file path but any file-like object. Doing the plumbing manually turns out to be relatively straightforward:

def extract_into_memory(archive_entry):
    import io
    contents = io.BytesIO()
    for block in archive_entry.get_blocks():
        contents.write(block)
    contents.seek(0)
    return contents

But maybe it would be worthwhile to include a similar helper function as part of this library?