code: def _set_snps(self, snps, build=37):
          
          self._snps = snps
          self._build = build
docs: Set `_snps` and `_build` properties of this ``Individual``.
  
          Notes
          -----
          Intended to be used internally to `lineage`.
  
          Parameters
          ----------
          snps : pandas.DataFrame
              individual's genetic data normalized for use with `lineage`
          build : int
              build of this ``Individual``'s SNPs