自定义构造 python 白名单 __builtins__

    def __safe_builtins(self):
        safe_names = '''
        object
        bool int float complex
        str bytes bytearray
        tuple list
        set frozenset
        dict
        slice range
        abs
        round
        pow
        divmod
        iter
        next
        len sum
        min max
        all any
        map filter
        zip
        enumerate
        sorted
        reversed
        bin hex oct
        ascii
        repr
        chr ord
        format
        dir
        locals globals
        id hash
        isinstance
        issubclass
        callable
        print
        input
        exit quit
        '''.strip()
        safe_name_set = frozenset(safe_names.split())
        safe_builtins = {name: builtins.__dict__[name] for name in safe_name_set}
        return safe_builtins