Nifty python function for turning machine readable bytes into human readable sizes

human_readable_sizes.py

def hr_bytes(size):
    '''
    This just returns the bytes in a human readable format.
    '''
    hr = lambda s:[(s%1024**i and "%.1f"%(s/1024.0**i) or str(s/1024**i))+x.strip() for i,x in enumerate(' KMGTPEZY') if s<1024**(i+1) or i==8][0]
    return hr(size)

Credit for this gem goes to @MTecknology