def get_column_default_string(self, column):
        if isinstance(column.server_default, schema.DefaultClause):
            if isinstance(column.server_default.arg, util.string_types):
                return "'%s'" % column.server_default.arg
            else:
                return self.sql_compiler.process(column.server_default.arg)
        else:
            return None
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/sqlalchemy/sql/compiler.py/DDLCompiler.get_column_default_string/original