engine.py 文件源码

def compile(self, statement, parameters, **kwargs):
        """given a sql.ClauseElement statement plus optional bind parameters, creates a new
        instance of this engine's SQLCompiler, compiles the ClauseElement, and returns the
        newly compiled object."""
        compiler = self.compiler(statement, parameters, **kwargs)
        statement.accept_visitor(compiler)
        compiler.after_compile()
        return compiler