title: Python recordlinkage identity
body: <p>Similar issue as <a href="https://stackoverflow.com/questions/36042584/r-recordlinkage-identity">R recordlinkage identity</a> but in python. The algorithm generates new identity  that do no reflect the correct identity of the records that were matche. Assuming data duplication with a single dataframe. </p>
  
  <p><strong>PS:</strong> It seems to be okay in the  <a href="https://recordlinkage.readthedocs.io/en/latest/notebooks/data_deduplication.html" rel="nofollow noreferrer">data duplication</a>
  example</p>