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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def names(cls):
 """A list of all emoji names without file extension."""

        if not cls._files:
            for f in os.listdir(cls._image_path):
                if(not f.startswith('.') and
                   os.path.isfile(os.path.join(cls._image_path, f))):
                    cls._files.append(os.path.splitext(f)[0])

        return cls._files