code: def upgrade():
      
      op.create_table(
          'userprofiles_userprofile',
          sa.Column('user_id', sa.Integer(), nullable=False),
          sa.Column('username', sa.String(length=255), nullable=True),
          sa.Column('displayname', sa.String(length=255), nullable=True),
          sa.Column('full_name', sa.String(length=255), nullable=False),
          sa.ForeignKeyConstraint(['user_id'], [u'accounts_user.id'], ),
          sa.PrimaryKeyConstraint('user_id'),
          sa.UniqueConstraint('username')
      )
docs: Upgrade database.