config.py 文件源码

def __new__(cls, name, bases, clsdict):
        """
        Equip all base-class methods with a needs_values decorator, and all non-const methods
        with a set_dirty_and_flush_changes decorator in addition to that."""
        kmm = '_mutating_methods_'
        if kmm in clsdict:
            mutating_methods = clsdict[kmm]
            for base in bases:
                methods = (t for t in inspect.getmembers(base, inspect.isroutine) if not t[0].startswith("_"))
                for name, method in methods:
                    if name in clsdict:
                        continue
                    method_with_values = needs_values(method)
                    if name in mutating_methods:
                        method_with_values = set_dirty_and_flush_changes(method_with_values)
                    # END mutating methods handling

                    clsdict[name] = method_with_values
                # END for each name/method pair
            # END for each base
        # END if mutating methods configuration is set

        new_type = super(MetaParserBuilder, cls).__new__(cls, name, bases, clsdict)
        return new_type