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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 list_images(self):
 """ list all available nspawn images :return: collection of instances of :class:`conu.backend.nspawn.image.NspawnImage` """

        # Fedora-Cloud-Base-27-1.6.x86_64 raw  no  601.7M Sun 2017-11-05 08:30:10 CET \
        #   Sun 2017-11-05 08:30:10 CET
        data = os.listdir(CONU_IMAGES_STORE)
        output = []
        for name in data:
            output.append(self.ImageClass(name, pull_policy=ImagePullPolicy.NEVER))
        return output