parameters: (cls, username)
return_statement: return {'deleted': x}
docstring: Deltes every uuid owned by specified user
docstring_summary: Deltes every uuid owned by specified user
docstring_tokens: Deltes every uuid owned by specified user
function: def delete_by_user(cls, username):
          """
          Deltes every uuid owned by specified user
          """
          x = cls.query.filter_by(username = username).delete()
          db.session.commit()
          return {'deleted': x}
function_tokens: def delete_by_user ( cls , username ) : x = cls . query . filter_by ( username = username ) . delete ( ) db . session . commit ( ) return { 'deleted' : x }