def Seek(self, offset, whence=0):
    if whence == 0:
      self.offset = offset
    elif whence == 1:
      self.offset += offset
    elif whence == 2:
      self.offset = self.size + offset
    else:
      raise RuntimeError("Illegal whence value %s" % whence)
Add a where clause to the query
dataset/ETHPy150Open google/grr/grr/client/vfs.py/VFSHandler.Seek--crossover with--dataset/ETHPy150Open sdispater/orator/orator/query/builder.py/QueryBuilder.where