[python] Use private names for routines
[python] Use private names for routines

kariminf/snowball,kariminf/snowball,assem-ch/snowball,snowballstem/snowball,cesarsouza/snowball,cesarsouza/snowball,cesarsouza/snowball,JDemler/snowball,JDemler/snowball,assem-ch/snowball,assem-ch/snowball,assem-ch/snowball,snowballstem/snowball,cesarsouza/snowball,snowballstem/snowball,assem-ch/snowball,cesarsouza/snowball,snowballstem/snowball,snowballstem/snowball,snowballstem/snowball,JDemler/snowball,snowballstem/snowball,cesarsouza/snowball,kariminf/snowball,JDemler/snowball,kariminf/snowball,JDemler/snowball,kariminf/snowball,JDemler/snowball,cesarsouza/snowball,snowballstem/snowball