[Python-Dev] Add __exports__ to modules

[Ka-Ping Yee]

On Mon, 8 Jan 2001, Paul Prescod wrote:
> dir() is one of the "interactive tools" I'd like to work better in the
> presence of __exports__. On the other hand, dir() works pretty poorly
> for object instances today so maybe we need something new anyhow. 

I suggest a built-in function "methods()" that works like this:

    def methods(obj):
        if type(obj) is InstanceType: return methods(obj.__class__)
        results = []
        if hasattr(obj, '__bases__'):
            for base in obj.__bases__:
                results.extend(methods(base))
        results.extend(
            filter(lambda k, o=obj: type(getattr(o, k)) in
                   [MethodType, BuiltinMethodType], dir(obj)))
        return unique(results)

    def unique(seq):
        dict = {}
        for item in seq: dict[item] = 1
        results = dict.keys()
        results.sort()
        return results


    >>> import sys
    >>> 
    >>> methods(sys.stdin)
    ['close', 'fileno', 'flush', 'isatty', 'read', 'readinto', 'readline', 'readlines', 'seek', 'tell', 'truncate', 'write', 'writelines']
    >>>        
    >>> import SocketServer
    >>> 
    >>> methods(SocketServer.ForkingTCPServer)
    ['__init__', 'collect_children', 'fileno', 'finish_request', 'get_request', 'handle_error', 'handle_request', 'process_request', 'serve_forever', 'server_activate', 'server_bind', 'verify_request']
    >>> 



-- ?!ng

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